Timo van der Laan Lv 1
FYI - I'm running from a freshly installed (not updated to an existing) application running the updated Main and 1207 is stable for me. It's worth the time to do! Just be sure you save your active puzzles and share them with yourself, and save the options.txt and all.macro files (your recipes and settings) from the old version before ditching the old application and reinstalling.
(This is particularly important to do periodically on the Mac platform, in which Foldit gets "foldit bloat" - the application grows over time and things slow down.)