diff --git a/src/CallHandler.js b/src/CallHandler.js
index 7403483e36..c76cff9b2e 100644
--- a/src/CallHandler.js
+++ b/src/CallHandler.js
@@ -62,6 +62,7 @@ import dis from './dispatcher';
 import { showUnknownDeviceDialogForCalls } from './cryptodevices';
 import SettingsStore from "./settings/SettingsStore";
 import WidgetUtils from './utils/WidgetUtils';
+import ScalarAuthClient from './ScalarAuthClient';
 
 global.mxCalls = {
     //room_id: MatrixCall
@@ -401,7 +402,29 @@ function _onAction(payload) {
     }
 }
 
-function _startCallApp(roomId, type) {
+async function _startCallApp(roomId, type) {
+    // check for a working intgrations manager. Technically we could put
+    // the state event in anyway, but the resulting widget would then not
+    // work for us. Better that the user knows before everyone else in the
+    // room sees it.
+    const scalarClient = new ScalarAuthClient();
+    let haveScalar = false;
+    try {
+        await scalarClient.connect();
+        haveScalar = scalarClient.hasCredentials();
+    } catch (e) {
+        // fall through
+    }
+    if (!haveScalar) {
+        const ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
+
+        Modal.createTrackedDialog('Could not connect to the integration server', '', ErrorDialog, {
+            title: _t('Could not connect to the integration server'),
+            description: _t('A conference call could not be started because the intgrations server is not available'),
+        });
+        return;
+    }
+
     dis.dispatch({
         action: 'appsDrawer',
         show: true,
diff --git a/src/i18n/strings/en_EN.json b/src/i18n/strings/en_EN.json
index 360e076bd8..710e0b5ec8 100644
--- a/src/i18n/strings/en_EN.json
+++ b/src/i18n/strings/en_EN.json
@@ -39,15 +39,13 @@
     "Conference calling is in development and may not be reliable.": "Conference calling is in development and may not be reliable.",
     "Failed to set up conference call": "Failed to set up conference call",
     "Conference call failed.": "Conference call failed.",
+    "Could not connect to the integration server": "Could not connect to the integration server",
+    "A conference call could not be started because the intgrations server is not available": "A conference call could not be started because the intgrations server is not available",
     "Call in Progress": "Call in Progress",
     "A call is already in progress!": "A call is already in progress!",
     "The file '%(fileName)s' failed to upload": "The file '%(fileName)s' failed to upload",
     "The file '%(fileName)s' exceeds this home server's size limit for uploads": "The file '%(fileName)s' exceeds this home server's size limit for uploads",
     "Upload Failed": "Upload Failed",
-    "Failure to create room": "Failure to create room",
-    "Server may be unavailable, overloaded, or you hit a bug.": "Server may be unavailable, overloaded, or you hit a bug.",
-    "Send anyway": "Send anyway",
-    "Send": "Send",
     "Sun": "Sun",
     "Mon": "Mon",
     "Tue": "Tue",
@@ -87,7 +85,6 @@
     "Failed to invite users to community": "Failed to invite users to community",
     "Failed to invite users to %(groupId)s": "Failed to invite users to %(groupId)s",
     "Failed to add the following rooms to %(groupId)s:": "Failed to add the following rooms to %(groupId)s:",
-    "Unnamed Room": "Unnamed Room",
     "Riot does not have permission to send you notifications - please check your browser settings": "Riot does not have permission to send you notifications - please check your browser settings",
     "Riot was not given permission to send notifications - please try again": "Riot was not given permission to send notifications - please try again",
     "Unable to enable Notifications": "Unable to enable Notifications",
@@ -201,6 +198,11 @@
     "%(names)s and %(count)s others are typing|other": "%(names)s and %(count)s others are typing",
     "%(names)s and %(count)s others are typing|one": "%(names)s and one other is typing",
     "%(names)s and %(lastPerson)s are typing": "%(names)s and %(lastPerson)s are typing",
+    "Failure to create room": "Failure to create room",
+    "Server may be unavailable, overloaded, or you hit a bug.": "Server may be unavailable, overloaded, or you hit a bug.",
+    "Send anyway": "Send anyway",
+    "Send": "Send",
+    "Unnamed Room": "Unnamed Room",
     "Your browser does not support the required cryptography extensions": "Your browser does not support the required cryptography extensions",
     "Not a valid Riot keyfile": "Not a valid Riot keyfile",
     "Authentication check failed: incorrect password?": "Authentication check failed: incorrect password?",
@@ -314,31 +316,6 @@
     "Off": "Off",
     "On": "On",
     "Noisy": "Noisy",
-    "Invalid alias format": "Invalid alias format",
-    "'%(alias)s' is not a valid format for an alias": "'%(alias)s' is not a valid format for an alias",
-    "Invalid address format": "Invalid address format",
-    "'%(alias)s' is not a valid format for an address": "'%(alias)s' is not a valid format for an address",
-    "not specified": "not specified",
-    "not set": "not set",
-    "Remote addresses for this room:": "Remote addresses for this room:",
-    "Addresses": "Addresses",
-    "The main address for this room is": "The main address for this room is",
-    "Local addresses for this room:": "Local addresses for this room:",
-    "This room has no local addresses": "This room has no local addresses",
-    "New address (e.g. #foo:%(localDomain)s)": "New address (e.g. #foo:%(localDomain)s)",
-    "Invalid community ID": "Invalid community ID",
-    "'%(groupId)s' is not a valid community ID": "'%(groupId)s' is not a valid community ID",
-    "Flair": "Flair",
-    "Showing flair for these communities:": "Showing flair for these communities:",
-    "This room is not showing flair for any communities": "This room is not showing flair for any communities",
-    "New community ID (e.g. +foo:%(localDomain)s)": "New community ID (e.g. +foo:%(localDomain)s)",
-    "You have <a>enabled</a> URL previews by default.": "You have <a>enabled</a> URL previews by default.",
-    "You have <a>disabled</a> URL previews by default.": "You have <a>disabled</a> URL previews by default.",
-    "URL previews are enabled by default for participants in this room.": "URL previews are enabled by default for participants in this room.",
-    "URL previews are disabled by default for participants in this room.": "URL previews are disabled by default for participants in this room.",
-    "In encrypted rooms, like this one, URL previews are disabled by default to ensure that your homeserver (where the previews are generated) cannot gather information about links you see in this room.": "In encrypted rooms, like this one, URL previews are disabled by default to ensure that your homeserver (where the previews are generated) cannot gather information about links you see in this room.",
-    "URL Previews": "URL Previews",
-    "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.": "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.",
     "Cannot add any more widgets": "Cannot add any more widgets",
     "The maximum permitted number of widgets have already been added to this room.": "The maximum permitted number of widgets have already been added to this room.",
     "Add a widget": "Add a widget",
@@ -441,11 +418,11 @@
     "At this time it is not possible to reply with an emote.": "At this time it is not possible to reply with an emote.",
     "Markdown is disabled": "Markdown is disabled",
     "Markdown is enabled": "Markdown is enabled",
+    "Unpin Message": "Unpin Message",
+    "Jump to message": "Jump to message",
     "No pinned messages.": "No pinned messages.",
     "Loading...": "Loading...",
     "Pinned Messages": "Pinned Messages",
-    "Unpin Message": "Unpin Message",
-    "Jump to message": "Jump to message",
     "%(duration)ss": "%(duration)ss",
     "%(duration)sm": "%(duration)sm",
     "%(duration)sh": "%(duration)sh",
@@ -579,6 +556,31 @@
     "Scroll to unread messages": "Scroll to unread messages",
     "Jump to first unread message.": "Jump to first unread message.",
     "Close": "Close",
+    "Invalid alias format": "Invalid alias format",
+    "'%(alias)s' is not a valid format for an alias": "'%(alias)s' is not a valid format for an alias",
+    "Invalid address format": "Invalid address format",
+    "'%(alias)s' is not a valid format for an address": "'%(alias)s' is not a valid format for an address",
+    "not specified": "not specified",
+    "not set": "not set",
+    "Remote addresses for this room:": "Remote addresses for this room:",
+    "Addresses": "Addresses",
+    "The main address for this room is": "The main address for this room is",
+    "Local addresses for this room:": "Local addresses for this room:",
+    "This room has no local addresses": "This room has no local addresses",
+    "New address (e.g. #foo:%(localDomain)s)": "New address (e.g. #foo:%(localDomain)s)",
+    "Invalid community ID": "Invalid community ID",
+    "'%(groupId)s' is not a valid community ID": "'%(groupId)s' is not a valid community ID",
+    "Flair": "Flair",
+    "Showing flair for these communities:": "Showing flair for these communities:",
+    "This room is not showing flair for any communities": "This room is not showing flair for any communities",
+    "New community ID (e.g. +foo:%(localDomain)s)": "New community ID (e.g. +foo:%(localDomain)s)",
+    "You have <a>enabled</a> URL previews by default.": "You have <a>enabled</a> URL previews by default.",
+    "You have <a>disabled</a> URL previews by default.": "You have <a>disabled</a> URL previews by default.",
+    "URL previews are enabled by default for participants in this room.": "URL previews are enabled by default for participants in this room.",
+    "URL previews are disabled by default for participants in this room.": "URL previews are disabled by default for participants in this room.",
+    "In encrypted rooms, like this one, URL previews are disabled by default to ensure that your homeserver (where the previews are generated) cannot gather information about links you see in this room.": "In encrypted rooms, like this one, URL previews are disabled by default to ensure that your homeserver (where the previews are generated) cannot gather information about links you see in this room.",
+    "URL Previews": "URL Previews",
+    "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.": "When someone puts a URL in their message, a URL preview can be shown to give more information about that link such as the title, description, and an image from the website.",
     "Sunday": "Sunday",
     "Monday": "Monday",
     "Tuesday": "Tuesday",
@@ -710,7 +712,6 @@
     "Uploaded on %(date)s by %(user)s": "Uploaded on %(date)s by %(user)s",
     "Download this file": "Download this file",
     "Integrations Error": "Integrations Error",
-    "Could not connect to the integration server": "Could not connect to the integration server",
     "Manage Integrations": "Manage Integrations",
     "%(nameList)s %(transitionList)s": "%(nameList)s %(transitionList)s",
     "%(severalUsers)sjoined %(count)s times|other": "%(severalUsers)sjoined %(count)s times",