OK, this hack did mess up my calendar forum (Max's Calendar). Basically it made the body not get saved, nor display any of the post details. Although, the date, time and title were showing up on the calendar ok.
I have a partial fix so far, take the addpost.php hacks from the multisig hack and do them the same on the addevent.php file which is from the calendar. This will let the info get saved and display ok, but no signatures will be available.
