diff --git a/Cargo.lock b/Cargo.lock
index e92bae295..9b9710967 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1781,7 +1781,7 @@ dependencies = [
 [[package]]
 name = "parity-ui-precompiled"
 version = "1.4.0"
-source = "git+https://github.com/paritytech/js-precompiled.git#b6fbfc59f044546ccd3b928fb17daa3812ae856e"
+source = "git+https://github.com/paritytech/js-precompiled.git#0826776d9190ee6945bfe481e10b19ec05b3a049"
 dependencies = [
  "parity-dapps-glue 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
diff --git a/js/package.json b/js/package.json
index 3d30a8df5..cd223942e 100644
--- a/js/package.json
+++ b/js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "parity.js",
-  "version": "1.7.68",
+  "version": "1.7.69",
   "main": "release/index.js",
   "jsnext:main": "src/index.js",
   "author": "Parity Team <admin@parity.io>",
diff --git a/js/src/abi/spec/event/event.js b/js/src/abi/spec/event/event.js
index 071a73965..604f58cb1 100644
--- a/js/src/abi/spec/event/event.js
+++ b/js/src/abi/spec/event/event.js
@@ -99,15 +99,15 @@ export default class Event {
     const namedTokens = {};
 
     topicParams.forEach((param, idx) => {
-      namedTokens[param.name] = topicTokens[idx];
+      namedTokens[param.name || idx] = topicTokens[idx];
     });
     dataParams.forEach((param, idx) => {
-      namedTokens[param.name] = dataTokens[idx];
+      namedTokens[param.name || idx] = dataTokens[idx];
     });
 
     const inputParamTypes = this.inputParamTypes();
     const decodedParams = this.inputParamNames()
-      .map((name, idx) => new DecodedLogParam(name, inputParamTypes[idx], namedTokens[name]));
+      .map((name, idx) => new DecodedLogParam(name, inputParamTypes[idx], namedTokens[name || idx]));
 
     return new DecodedLog(decodedParams, address);
   }
diff --git a/js/src/api/contract/contract.js b/js/src/api/contract/contract.js
index 77c9568a9..d6c71e3df 100644
--- a/js/src/api/contract/contract.js
+++ b/js/src/api/contract/contract.js
@@ -182,10 +182,11 @@ export default class Contract {
         log.params = {};
         log.event = event.name;
 
-        decoded.params.forEach((param) => {
+        decoded.params.forEach((param, index) => {
           const { type, value } = param.token;
+          const key = param.name || index;
 
-          log.params[param.name] = { type, value };
+          log.params[key] = { type, value };
         });
 
         return log;
diff --git a/js/src/api/format/output.js b/js/src/api/format/output.js
index ddb8b79f8..a712da5fe 100644
--- a/js/src/api/format/output.js
+++ b/js/src/api/format/output.js
@@ -93,6 +93,16 @@ export function outChainStatus (status) {
 }
 
 export function outDate (date) {
+  if (typeof date.toISOString === 'function') {
+    return date;
+  }
+
+  try {
+    if (typeof date === 'string' && (new Date(date)).toISOString() === date) {
+      return new Date(date);
+    }
+  } catch (error) {}
+
   return new Date(outNumber(date).toNumber() * 1000);
 }
 
diff --git a/js/src/views/Contract/Events/Event/event.js b/js/src/views/Contract/Events/Event/event.js
index eb370e7f1..fc2436f8e 100644
--- a/js/src/views/Contract/Events/Event/event.js
+++ b/js/src/views/Contract/Events/Event/event.js
@@ -112,11 +112,16 @@ export default class Event extends Component {
   }
 
   renderParam (name, param) {
+    // Don't add a label id the name is an index key (ie. a Number)
+    const label = parseInt(name).toString() === name.toString()
+      ? undefined
+      : name;
+
     return (
       <TypedInput
         allowCopy
         className={ styles.input }
-        label={ name }
+        label={ label }
         param={ param.type }
         readOnly
         value={ param.value }
diff --git a/js/src/views/ContractDevelop/store.js b/js/src/views/ContractDevelop/store.js
index 2c955b3cf..9c799a648 100644
--- a/js/src/views/ContractDevelop/store.js
+++ b/js/src/views/ContractDevelop/store.js
@@ -139,9 +139,10 @@ export default class ContractDevelopStore {
 
     this.worker = worker;
 
-    this
-      .fetchSolidityVersions()
-      .then(() => this.reloadContracts());
+    return Promise.all([
+      this.fetchSolidityVersions(),
+      this.reloadContracts(undefined, undefined, false)
+    ]);
   }
 
   fetchSolidityVersions () {
@@ -397,11 +398,10 @@ export default class ContractDevelopStore {
 
     const { errors = [] } = data;
     const errorAnnotations = this.parseErrors(errors);
-    const formalAnnotations = this.parseErrors(data.formal && data.formal.errors, true);
+    // const formalAnnotations = this.parseErrors(data.formal && data.formal.errors, true);
 
     const annotations = [].concat(
-      errorAnnotations,
-      formalAnnotations
+      errorAnnotations
     );
 
     const contractKeys = Object.keys(contracts || {});
@@ -493,7 +493,7 @@ export default class ContractDevelopStore {
     this.reloadContracts(cId);
   }
 
-  @action reloadContracts = (id, sourcecode) => {
+  @action reloadContracts = (id, sourcecode, recompile = true) => {
     const localStore = store.get(WRITE_CONTRACT_STORE_KEY) || {};
 
     this.savedContracts = localStore.saved || {};
@@ -513,7 +513,9 @@ export default class ContractDevelopStore {
 
     this.resizeEditor();
 
-    return this.handleCompile();
+    if (recompile) {
+      return this.handleCompile();
+    }
   }
 
   @action handleLoadContract = (contract) => {
diff --git a/js/src/views/Wallet/WalletSettings/walletSettings.js b/js/src/views/Wallet/WalletSettings/walletSettings.js
index 73d821530..2bf7ac3b5 100644
--- a/js/src/views/Wallet/WalletSettings/walletSettings.js
+++ b/js/src/views/Wallet/WalletSettings/walletSettings.js
@@ -247,8 +247,6 @@ class WalletSettings extends Component {
   }
 
   renderChange (change) {
-    const { accountsInfo } = this.props;
-
     switch (change.type) {
       case 'dailylimit':
         return (
@@ -279,14 +277,50 @@ class WalletSettings extends Component {
                 id='walletSettings.ownersChange.details'
                 defaultMessage=' from {from} to {to} '
                 values={ {
-                  from: <code>change.initial.toNumber()</code>,
-                  to: <code>change.value.toNumber()</code>
+                  from: <code>{ change.initial.toNumber() }</code>,
+                  to: <code>{ change.value.toNumber() }</code>
                 } }
               />
             </div>
           </div>
         );
 
+      case 'change_owner':
+        return (
+          <div className={ [ styles.change ].join(' ') }>
+            <div className={ styles.label }>
+              <FormattedMessage
+                id='walletSettings.changeOwner.title'
+                defaultMessage='Change Owner'
+              />
+            </div>
+            <div>
+              <InputAddress
+                disabled
+                label={
+                  <FormattedMessage
+                    id='walletSettings.changeOwner.labelFrom'
+                    defaultMessage='From'
+                  />
+                }
+                text
+                value={ change.value.from }
+              />
+              <InputAddress
+                disabled
+                label={
+                  <FormattedMessage
+                    id='walletSettings.changeOwner.labelTo'
+                    defaultMessage='To'
+                  />
+                }
+                text
+                value={ change.value.to }
+              />
+            </div>
+          </div>
+        );
+
       case 'add_owner':
         return (
           <div className={ [ styles.change, styles.add ].join(' ') }>
@@ -299,8 +333,8 @@ class WalletSettings extends Component {
             <div>
               <InputAddress
                 disabled
+                text
                 value={ change.value }
-                accounts={ accountsInfo }
               />
             </div>
           </div>
@@ -318,8 +352,8 @@ class WalletSettings extends Component {
             <div>
               <InputAddress
                 disabled
+                text
                 value={ change.value }
-                accounts={ accountsInfo }
               />
             </div>
           </div>
diff --git a/js/src/views/Wallet/WalletSettings/walletSettingsStore.js b/js/src/views/Wallet/WalletSettings/walletSettingsStore.js
index d00532462..cfc448617 100644
--- a/js/src/views/Wallet/WalletSettings/walletSettingsStore.js
+++ b/js/src/views/Wallet/WalletSettings/walletSettingsStore.js
@@ -78,12 +78,16 @@ export default class WalletSettingsStore {
       const changes = data.map((datum) => {
         const [ type, valueStr ] = datum.split(';');
 
-        let value = valueStr;
+        let value;
 
-        // Only addresses start with `0x`, the others
-        // are BigNumbers
-        if (!/^0x/.test(valueStr)) {
-          value = new BigNumber(valueStr, 16);
+        if (/^#BN#/.test(valueStr)) {
+          value = new BigNumber(valueStr.replace(/^#BN#/, ''), 16);
+        } else {
+          try {
+            value = JSON.parse(valueStr);
+          } catch (e) {
+            value = valueStr;
+          }
         }
 
         return { type, value };
@@ -104,8 +108,8 @@ export default class WalletSettingsStore {
       const { type, value } = change;
 
       const valueStr = (value && typeof value.plus === 'function')
-        ? value.toString(16)
-        : value;
+        ? '#BN#' + value.toString(16)
+        : JSON.stringify(value);
 
       return [
         type,
@@ -147,14 +151,26 @@ export default class WalletSettingsStore {
     const ownersToRemove = prevOwners.filter((owner) => !nextOwners.includes(owner));
     const ownersToAdd = nextOwners.filter((owner) => !prevOwners.includes(owner));
 
-    ownersToRemove.forEach((owner) => {
+    const ownersChangeCount = Math.min(ownersToRemove.length, ownersToAdd.length);
+
+    for (let i = 0; i < ownersChangeCount; i++) {
+      changes.push({
+        type: 'change_owner',
+        value: {
+          from: ownersToRemove[i],
+          to: ownersToAdd[i]
+        }
+      });
+    }
+
+    ownersToRemove.slice(ownersChangeCount).forEach((owner) => {
       changes.push({
         type: 'remove_owner',
         value: owner
       });
     });
 
-    ownersToAdd.forEach((owner) => {
+    ownersToAdd.slice(ownersChangeCount).forEach((owner) => {
       changes.push({
         type: 'add_owner',
         value: owner
@@ -182,6 +198,12 @@ export default class WalletSettingsStore {
             this.wallet.require = value;
             break;
 
+          case 'change_owner':
+            this.wallet.owners = this.wallet.owners
+              .filter((owner) => owner !== value.from)
+              .concat(value.to);
+            break;
+
           case 'remove_owner':
             this.wallet.owners = this.wallet.owners.filter((owner) => owner !== value);
             break;
@@ -309,6 +331,13 @@ export default class WalletSettingsStore {
       };
     }
 
+    if (change.type === 'change_owner') {
+      return {
+        method: walletInstance.changeOwner,
+        values: [ change.value.from, change.value.to ]
+      };
+    }
+
     if (change.type === 'remove_owner') {
       return {
         method: walletInstance.removeOwner,