I had this.
But then I did the fix for the '
Mark all read' bug.
There was clearly a template issue which was resolved by uploading those three files.
Driv,
I check my and saw the 'mark all read' bug.
Then follow your link and got it fix,
but the Search language still with problems.
I did not have time to click on every link on the forum admin, but
Subscriptions -->View Subscriptions render a full page (The page lost the left column with all menus)
So, maybe there is more blank screens...
Let's wait for support