I just tried to Upgrade from 1.2 RC2 to 1.2. I uploaded all files, and then a message shows up "There are at least 1 file(s) that do not appear to have the expected contents." ... So I got the full package and uploaded everything once again. Same mistake. I didn't know what to do, so I tried to "Begin Upgrade" even if the error was still there. First I got that Error "Line 26: Template syntax error." and afterwards that one "ad_thread_list_below_stickies: Line 1: Template syntax error." (caused by an add-on?). I do not really know what I should do now.