fixed behavioural errors in updater ui

Assets/RothenburgAR/Scripts/Updater/UpdaterBehaviour.cs

@@ -148,8 +148,6 @@ namespace RothenburgAR.Updater
              *                     meta.json
              *             id
              *                 ...
-             *         poi
-             *             ...
              *         media
              *             ...
              */
@@ -157,6 +155,13 @@ namespace RothenburgAR.Updater
             UpdateConfirmationDialog.SetActive(false);
             UpdateFailedDialog.SetActive(false);
 
+            if (VersionAnswer == null)
+            {
+                // try to get VersionAnswer first if that's what failed
+                CheckForUpdates();
+                return;
+            }
+
             //TODO write languages to file the app can read (so that the languagemanager can decide which languages the user can choose from)
 
             var updatedMeta = VersionAnswer.Data.Where(d => d.Meta.Status == VersionStatus.updated).ToList();
@@ -330,6 +335,7 @@ namespace RothenburgAR.Updater
             }
             else
             {
+                UpdateCompletedDialog.SetActive(false);
                 downloadEndedTime = DateTime.Now.AddSeconds(1);
             }
         }