diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0891d4d..5455058 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- [x] Fixed hook that causes 100x rerendering.
+- [x] Logging.
+- [x] Error handling.
 - [x] Table sorting.
 - [x] Version check.
 - [x] Fix JsonTree (yarn link).
@@ -23,9 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [x] Monorepo for client/server.
 - [x] Basic React/Apollo component.
 
-## Tasks
-
-### POC
+### Next
 
 - [ ] Webpack and dynamic config 
 - [ ] Complete WNS functionality
@@ -38,8 +39,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [ ] Signal
 - [ ] Metadata
 
-### Next
-
 - [ ] https://github.com/standard/standardx (JSX)
 - [ ] Client/server API abstraction (error handler, etc.)
 - [ ] Port dashboard API calls (resolve config first).
diff --git a/packages/console-client/package.json b/packages/console-client/package.json
index 0b8ef00..5fe81c3 100644
--- a/packages/console-client/package.json
+++ b/packages/console-client/package.json
@@ -30,8 +30,9 @@
     "@apollo/react-components": "^3.1.5",
     "@apollo/react-hooks": "^3.1.5",
     "@babel/runtime": "^7.8.7",
+    "@dxos/debug": "^1.0.0-beta.20",
     "@dxos/gem-core": "^1.0.0-beta.11",
-    "@dxos/react-ux": "^1.0.0-beta.20",
+    "@dxos/react-ux": "^1.0.0-beta.37",
     "@material-ui/core": "^4.10.0",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "^4.0.0-alpha.54",
diff --git a/packages/console-client/src/components/Error.js b/packages/console-client/src/components/Error.js
index 93c07c7..deb5215 100644
--- a/packages/console-client/src/components/Error.js
+++ b/packages/console-client/src/components/Error.js
@@ -2,7 +2,7 @@
 // Copyright 2020 DxOS.org
 //
 
-import React from 'react';
+import React, { useEffect, useState } from 'react';
 import { makeStyles } from '@material-ui/core/styles';
 import Alert from '@material-ui/lab/Alert';
 import AlertTitle from '@material-ui/lab/AlertTitle';
@@ -10,30 +10,37 @@ import Snackbar from '@material-ui/core/Snackbar';
 
 const useStyles = makeStyles(() => ({
   root: {
-    marginBottom: 60
+    marginBottom: 48
+  },
+
+  alert: {
+    minWidth: 400
   }
 }));
 
-const Error = ({ message, ...rest }) => {
+const Error = ({ error, ...rest }) => {
   const classes = useStyles();
-  if (!message) {
-    return null;
-  }
+  const [message, setMessage] = useState(error);
 
-  const messages = Array.isArray(message) ? message : [message];
+  useEffect(() => {
+    setMessage(error ? error.message || String(error) : null);
+  }, [error]);
+
+  const handleClose = () => {
+    setMessage(null);
+  };
 
   return (
     <Snackbar
-      className={classes.root}
+      classes={{ root: classes.root }}
       open={Boolean(message)}
       anchorOrigin={{ vertical: 'bottom', horizontal: 'center' }}
       TransitionProps={{ exit: false }}
+      autoHideDuration={1000}
     >
-      <Alert severity="error" {...rest}>
+      <Alert classes={{ root: classes.alert }} severity="error" {...rest} onClose={handleClose}>
         <AlertTitle>Error</AlertTitle>
-        {messages.map((message, i) => (
-          <div key={i}>{message}</div>
-        ))}
+        <div>{message}</div>
       </Alert>
     </Snackbar>
   );
diff --git a/packages/console-client/src/components/Log.js b/packages/console-client/src/components/Log.js
index b25c6f4..c65644e 100644
--- a/packages/console-client/src/components/Log.js
+++ b/packages/console-client/src/components/Log.js
@@ -4,31 +4,28 @@
 
 import clsx from 'clsx';
 import moment from 'moment';
-import React, { Fragment } from 'react';
+import React from 'react';
 import { makeStyles } from '@material-ui/core/styles';
 
 const useStyles = makeStyles(theme => ({
   root: {
     display: 'flex',
     flex: 1,
-    flexDirection: 'column',
     overflow: 'hidden'
   },
 
-  container: {
+  log: {
     display: 'flex',
     // Pin to bottom (render in time order).
     flexDirection: 'column-reverse',
-    flex: 1,
-    overflowX: 'scroll',
-    overflowY: 'scroll'
-  },
-
-  log: {
+    overflow: 'scroll',
     padding: theme.spacing(1),
-    fontSize: 16,
-    fontFamily: 'monospace',
-    whiteSpace: 'nowrap'
+
+    '& div': {
+      fontSize: 16,
+      fontFamily: 'monospace',
+      whiteSpace: 'nowrap'
+    }
   },
 
   level: {
@@ -50,7 +47,7 @@ const useStyles = makeStyles(theme => ({
   }
 }));
 
-const Log = ({ log = [], onClear }) => {
+const Log = ({ log = [] }) => {
   const classes = useStyles();
 
   const levels = {
@@ -91,11 +88,11 @@ const Log = ({ log = [], onClear }) => {
         const pkg = levels[level] ? '' : `[${level}]: `;
 
         message = (
-          <Fragment>
+          <>
             <span className={classes.ts}>{datetime}</span>
             <span className={clsx(classes.level, className)}>{label || level}</span>
             <span>{pkg}{text}</span>
-          </Fragment>
+          </>
         );
 
         return true;
@@ -111,10 +108,8 @@ const Log = ({ log = [], onClear }) => {
 
   return (
     <div className={classes.root}>
-      <div className={classes.container}>
-        <div className={classes.log}>
-          {log.reverse().map((line, i) => <Line key={i} message={line} />)}
-        </div>
+      <div className={classes.log}>
+        {log.map((line, i) => <Line key={i} message={line} />)}
       </div>
     </div>
   );
diff --git a/packages/console-client/src/components/PackageLink.js b/packages/console-client/src/components/PackageLink.js
index 1bca09d..27223cc 100644
--- a/packages/console-client/src/components/PackageLink.js
+++ b/packages/console-client/src/components/PackageLink.js
@@ -2,7 +2,7 @@
 // Copyright 2020 DxOS.org.org
 //
 
-import React, { Fragment } from 'react';
+import React from 'react';
 import Link from '@material-ui/core/Link';
 
 import { getServiceUrl } from '../util/config';
@@ -14,7 +14,6 @@ import { getServiceUrl } from '../util/config';
  * @param {string} pkg
  */
 const PackageLink = ({ config, type, pkg }) => {
-
   // TODO(burdon): Pass in expected arg types.
   if (typeof pkg === 'string') {
     const ipfsUrl = getServiceUrl(config, 'ipfs.gateway', { path: `${pkg}` });
@@ -25,28 +24,26 @@ const PackageLink = ({ config, type, pkg }) => {
   switch (type) {
     case 'wrn:bot': {
       const packageLinks = [];
-      Object.keys(pkg).forEach(platform => {
+      Object.keys(pkg).forEach((platform, i) => {
         Object.keys(pkg[platform]).forEach(arch => {
           const cid = pkg[platform][arch];
           const ipfsUrl = getServiceUrl(config, 'ipfs.gateway', { path: `${cid}` });
 
           packageLinks.push(
-            <Fragment>
-              <Link
-                key={cid}
-                href={ipfsUrl}
-                title={cid}
-                target="ipfs"
-              >
-                {platform}/{arch}: {cid}
-              </Link>
-            </Fragment>
+            <Link
+              key={`${cid}`}
+              href={ipfsUrl}
+              title={cid}
+              target="ipfs"
+            >
+              {platform}/{arch}: {cid}
+            </Link>
           );
         });
       });
 
       return (
-        <Fragment>{packageLinks}</Fragment>
+        <>{packageLinks}</>
       );
     }
   }
diff --git a/packages/console-client/src/containers/ConsoleContextProvider.js b/packages/console-client/src/containers/ConsoleContextProvider.js
index 1d08ee5..2095147 100644
--- a/packages/console-client/src/containers/ConsoleContextProvider.js
+++ b/packages/console-client/src/containers/ConsoleContextProvider.js
@@ -7,7 +7,7 @@ import defaultsDeep from 'lodash.defaultsdeep';
 
 import ErrorBoundary from '../components/ErrorBoundary';
 
-import { ConsoleContext, statusReducer, SET_STATUS } from '../hooks';
+import { ConsoleContext, statusReducer, STATUS, SET_STATUS } from '../hooks';
 
 const defaultState = {};
 
@@ -18,8 +18,7 @@ const defaultState = {};
  * @param {string} action
  */
 const appReducer = (state, action) => ({
-  // TODO(burdon): Key shouldn't be same as action type.
-  [SET_STATUS]: statusReducer(state[SET_STATUS], action)
+  [STATUS]: statusReducer(state[STATUS], action)
 });
 
 /**
@@ -36,8 +35,6 @@ const appReducer = (state, action) => ({
 const ConsoleContextProvider = ({ children, config, modules, initialState = {}, errorHandler }) => {
   const [state, dispatch] = useReducer(appReducer, defaultsDeep({}, initialState, defaultState));
 
-  const { errors: { exceptions = [] } = {} } = state[SET_STATUS] || {};
-
   // Bind the error handler.
   if (errorHandler) {
     useEffect(() => {
@@ -45,7 +42,7 @@ const ConsoleContextProvider = ({ children, config, modules, initialState = {},
         dispatch({
           type: SET_STATUS,
           payload: {
-            exceptions: [error, ...exceptions]
+            error
           }
         });
       });
diff --git a/packages/console-client/src/containers/Main.js b/packages/console-client/src/containers/Main.js
index 9ce9d12..d0d3b9a 100644
--- a/packages/console-client/src/containers/Main.js
+++ b/packages/console-client/src/containers/Main.js
@@ -9,6 +9,8 @@ import { ApolloProvider } from '@apollo/react-hooks';
 import { ThemeProvider } from '@material-ui/core/styles';
 import CssBaseline from '@material-ui/core/CssBaseline';
 
+import { ErrorHandler } from '@dxos/debug';
+
 import config from '../../config.yml';
 import { build } from '../../version.json';
 
@@ -33,13 +35,16 @@ Object.assign(config, { build });
 
 debug.enable(config.system.debug);
 
+// Global error handler.
+const errorHandler = new ErrorHandler();
+
 /**
  * Root application.
  */
 const Main = () => {
   return (
     <ApolloProvider client={clientFactory(config)}>
-      <ConsoleContextProvider config={config} modules={modules}>
+      <ConsoleContextProvider config={config} modules={modules} errorHandler={errorHandler}>
         <ThemeProvider theme={createTheme(config.app.theme)}>
           <CssBaseline />
           <HashRouter>
diff --git a/packages/console-client/src/containers/StatusBar.js b/packages/console-client/src/containers/StatusBar.js
index 1a8da72..f32d40a 100644
--- a/packages/console-client/src/containers/StatusBar.js
+++ b/packages/console-client/src/containers/StatusBar.js
@@ -18,6 +18,8 @@ import red from '@material-ui/core/colors/red';
 
 import { ConsoleContext, useStatusReducer } from '../hooks';
 
+import Error from '../components/Error';
+
 import VersionCheck from './VersionCheck';
 
 const useStyles = makeStyles((theme) => ({
@@ -30,17 +32,15 @@ const useStyles = makeStyles((theme) => ({
     color: grey[400]
   },
   left: {
+    display: 'flex',
     width: 160
   },
   right: {
+    display: 'flex',
     width: 160,
-    textAlign: 'right'
+    justifyContent: 'flex-end'
   },
   center: {
-    flex: 1,
-    textAlign: 'center'
-  },
-  info: {
     display: 'flex',
     fontFamily: 'monospace',
     fontSize: 'large',
@@ -90,7 +90,7 @@ const StatusBar = () => {
   const StatusIcon = ({ error }) => {
     if (error) {
       return (
-        <ErrorIcon className={clsx(classes.icon, classes.error)} title={String(error)} />
+        <ErrorIcon className={clsx(classes.icon, classes.error)} />
       );
     } else {
       return (
@@ -100,24 +100,28 @@ const StatusBar = () => {
   };
 
   return (
-    <Toolbar className={classes.root}>
-      <div className={classes.left}>
-        <Link className={classes.link} href={config.app.website} rel="noreferrer" target="_blank">
-          <PublicIcon />
-        </Link>
-      </div>
+    <>
+      <Toolbar className={classes.root}>
+        <div className={classes.left}>
+          <Link className={classes.link} href={config.app.website} rel="noreferrer" target="_blank">
+            <PublicIcon />
+          </Link>
+        </div>
 
-      <div className={classes.info}>
-        <div>{name} ({version})</div>
-        <div>{moment(buildDate).format('L')}</div>
-        <VersionCheck />
-      </div>
+        <div className={classes.center}>
+          <div>{name} ({version})</div>
+          <div>{moment(buildDate).format('L')}</div>
+          <VersionCheck />
+        </div>
 
-      <div className={classes.right}>
-        <LoadingIcon className={clsx(classes.icon, isLoading && classes.loading)} />
-        <StatusIcon error={error} />
-      </div>
-    </Toolbar>
+        <div className={classes.right}>
+          <LoadingIcon className={clsx(classes.icon, isLoading && classes.loading)} />
+          <StatusIcon error={error} />
+        </div>
+      </Toolbar>
+
+      <Error error={error} />
+    </>
   );
 };
 
diff --git a/packages/console-client/src/containers/panels/wns/WNS.js b/packages/console-client/src/containers/panels/wns/WNS.js
index dc6e529..95fdaa5 100644
--- a/packages/console-client/src/containers/panels/wns/WNS.js
+++ b/packages/console-client/src/containers/panels/wns/WNS.js
@@ -20,8 +20,8 @@ import WNSLog from './WNSLog';
 import WNSRecords, { WNSRecordType } from './WNSRecords';
 import WNSStatus from './WNSStatus';
 
-const TAB_RECORDS = 'explorer';
-const TAB_STATUS = 'records';
+const TAB_RECORDS = 'records';
+const TAB_STATUS = 'status';
 const TAB_LOG = 'log';
 
 const useStyles = makeStyles(() => ({
diff --git a/packages/console-client/src/hooks/status.js b/packages/console-client/src/hooks/status.js
index 96cdf42..5bc0e21 100644
--- a/packages/console-client/src/hooks/status.js
+++ b/packages/console-client/src/hooks/status.js
@@ -2,20 +2,21 @@
 // Copyright 2019 DxOS
 //
 
-import { useContext } from 'react';
+import { useContext, useEffect } from 'react';
 
 import { ConsoleContext } from './context';
 
-export const SET_STATUS = 'errors';
+export const STATUS = 'xxx';
+export const SET_STATUS = 'set.status';
 
 /**
- *
+ * Dispatcher for app status.
  */
 export const useStatusReducer = () => {
   const { state, dispatch } = useContext(ConsoleContext);
 
   return [
-    state[SET_STATUS] || {},
+    state[STATUS] || {},
     value => dispatch({ type: SET_STATUS, payload: value || { exceptions: [] } })
   ];
 };
@@ -26,13 +27,15 @@ export const useStatusReducer = () => {
 export const useQueryStatusReducer = ({ loading, error, data }) => {
   const [, setStatus] = useStatusReducer();
 
-  if (loading) {
-    setTimeout(() => setStatus({ loading }));
-  }
+  useEffect(() => {
+    if (loading) {
+      setTimeout(() => setStatus({ loading }));
+    }
 
-  if (error) {
-    setTimeout(() => setStatus({ error }));
-  }
+    if (error) {
+      setTimeout(() => setStatus({ error }));
+    }
+  }, [loading, error]);
 
   return data;
 };
diff --git a/packages/console-client/src/resolvers.js b/packages/console-client/src/resolvers.js
index 2447af4..82cbbd7 100644
--- a/packages/console-client/src/resolvers.js
+++ b/packages/console-client/src/resolvers.js
@@ -12,6 +12,8 @@ const log = debug('dxos:console:client:resolvers');
 
 const timestamp = () => new Date().toUTCString();
 
+const MAX_LOG_LENGTH = 200;
+
 /**
  * Resolvers
  * https://www.apollographql.com/docs/tutorial/local-state/#local-resolvers
@@ -21,6 +23,11 @@ export const createResolvers = config => {
   const endpoint = getServiceUrl(config, 'wns.server', { absolute: true });
   const registry = new Registry(endpoint);
 
+  // TODO(burdon): Errors swallowed!
+
+  // Oldest to latest.
+  let cachedLog = [];
+
   return {
     Query: {
       wns_status: async () => {
@@ -52,13 +59,29 @@ export const createResolvers = config => {
       wns_log: async () => {
         log('WNS log...');
 
-        // TODO(burdon): Cache and merge previous state.
         const data = await registry.getLogs();
 
+        // TODO(burdon): Bug returns blank line at end.
+        const filtered = data.map(line => line).filter(Boolean);
+
+        // Cache and merge previous state.
+        let i = filtered.findIndex(line => line === cachedLog[cachedLog.length - 1]);
+        if (i === -1) {
+          cachedLog = filtered;
+        } else {
+          i++;
+          for (; i < filtered.length - 1; i++) {
+            cachedLog.push(filtered[i]);
+          }
+
+          // Trim.
+          cachedLog.splice(0, cachedLog.length - MAX_LOG_LENGTH);
+        }
+
         return {
           __typename: 'JSONLog',
           timestamp: timestamp(),
-          log: data
+          log: [...cachedLog].reverse()
         };
       }
     }
diff --git a/packages/console-client/version.json b/packages/console-client/version.json
index 9e9a3ed..1c14713 100644
--- a/packages/console-client/version.json
+++ b/packages/console-client/version.json
@@ -1,7 +1,7 @@
 {
   "build": {
     "name":      "@dxos/console-client",
-    "buildDate": "2020-05-26T17:38:45.688Z",
+    "buildDate": "2020-05-27T01:16:27.565Z",
     "version":   "1.0.0-beta.0"
   }
 }
diff --git a/packages/console-server/src/resolvers.js b/packages/console-server/src/resolvers.js
index a7364e2..de5a764 100644
--- a/packages/console-server/src/resolvers.js
+++ b/packages/console-server/src/resolvers.js
@@ -15,6 +15,10 @@ const timestamp = () => new Date().toUTCString();
  * @param config
  */
 export const createResolvers = config => ({
+
+  // TODO(burdon): Auth mutations.
+  // https://www.apollographql.com/docs/apollo-server/data/errors/#codes
+
   Mutation: {
     //
     // WNS
diff --git a/yarn.lock b/yarn.lock
index e635012..b6c2a74 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1179,6 +1179,13 @@
   dependencies:
     debug "^4.1.1"
 
+"@dxos/debug@^1.0.0-beta.37":
+  version "1.0.0-beta.37"
+  resolved "https://registry.yarnpkg.com/@dxos/debug/-/debug-1.0.0-beta.37.tgz#0fc3a1d9d0b2616c5c22da6fcea7c369610ec282"
+  integrity sha512-65jOaqMrjv1Comepqq2U0k9olpAiKtk6pVEnhZHb+FutPMnjIkA+TPedNfTpxWQEs3MpG0IVyj64JugGl2KhQA==
+  dependencies:
+    debug "^4.1.1"
+
 "@dxos/gem-core@^1.0.0-beta.11":
   version "1.0.0-beta.11"
   resolved "https://registry.yarnpkg.com/@dxos/gem-core/-/gem-core-1.0.0-beta.11.tgz#b4b8e82b3cfe7a9dd06fac8596ccf04fa8028e21"
@@ -1194,17 +1201,16 @@
     react-dom "^16.13.1"
     react-resize-aware "^3.0.0"
 
-"@dxos/react-ux@^1.0.0-beta.20":
-  version "1.0.0-beta.20"
-  resolved "https://registry.yarnpkg.com/@dxos/react-ux/-/react-ux-1.0.0-beta.20.tgz#0f0801ae2ddb9089428034cc4b466ee98206a180"
-  integrity sha512-larSB5cNCbyvP55/qan9uzioGXrcbtvrmy+fBRx7eLlsFs/eTgD/zrNMSVtq5mvMAn/oKKCOX1wipxm4gK6fdA==
+"@dxos/react-ux@^1.0.0-beta.37":
+  version "1.0.0-beta.37"
+  resolved "https://registry.yarnpkg.com/@dxos/react-ux/-/react-ux-1.0.0-beta.37.tgz#4a6003ce52f0afa156e0af457162d2d14695f153"
+  integrity sha512-QuRIAc4xY57uHRqRnXwGZEW5VD6NVmpIQWRB1T2XsmRdyIzwWDHgK6pBzd7zeNQI/6nqzHr0fkeRY0Lsqou8Cw==
   dependencies:
     "@dxos/crypto" "^1.0.0-beta.1"
-    "@dxos/debug" "^1.0.0-beta.20"
+    "@dxos/debug" "^1.0.0-beta.37"
     "@material-ui/core" "^4.9.0"
     "@material-ui/icons" "^4.5.1"
     "@material-ui/lab" "^4.0.0-alpha.42"
-    "@material-ui/styles" "^4.9.0"
     clsx "^1.0.4"
     lodash.isplainobject "^4.0.6"
     uuid "^3.3.3"
@@ -2189,7 +2195,7 @@
     prop-types "^15.7.2"
     react-is "^16.8.0"
 
-"@material-ui/styles@^4.10.0", "@material-ui/styles@^4.9.0":
+"@material-ui/styles@^4.10.0":
   version "4.10.0"
   resolved "https://registry.yarnpkg.com/@material-ui/styles/-/styles-4.10.0.tgz#2406dc23aa358217aa8cc772e6237bd7f0544071"
   integrity sha512-XPwiVTpd3rlnbfrgtEJ1eJJdFCXZkHxy8TrdieaTvwxNYj42VnnCyFzxYeNW9Lhj4V1oD8YtQ6S5Gie7bZDf7Q==