if user/pass is wrong, open prefs

ankiqt/ui/main.py

@@ -2003,6 +2003,7 @@ it to your friends.
         self.connect(self.syncThread, SIGNAL("fullSyncStarted"), self.fullSyncStarted)
         self.connect(self.syncThread, SIGNAL("fullSyncFinished"), self.fullSyncFinished)
         self.connect(self.syncThread, SIGNAL("fullSyncProgress"), self.fullSyncProgress)
+        self.connect(self.syncThread, SIGNAL("badUserPass"), self.badUserPass)
         self.syncThread.start()
         self.switchToWelcomeScreen()
         self.setEnabled(False)
@@ -2069,6 +2070,10 @@ it to your friends.
         ui.utils.showWarning(text, self)
         self.setStatus("")
 
+    def badUserPass(self):
+        ui.preferences.Preferences(self, self.config).dialog.tabWidget.\
+                                         setCurrentIndex(1)
+
     def noSyncResponse(self):
         msg = _("""\
 <h1>Sync Failed</h1>

ankiqt/ui/sync.py

@@ -68,6 +68,7 @@ class Sync(QThread):
     def getErrorMessage(self, error):
         if error.data.get('status') == "invalidUserPass":
             msg=_("Please double-check your username/password.")
+            self.emit(SIGNAL("badUserPass"))
         elif error.data.get('status') == "oldVersion":
             msg=_("The sync protocol has changed. Please upgrade.")
         else: