October 2015
I uninstalled Island Paradise because it was causing my game to crash constantly, the game disk I play on now University however my game is patched to 1.54.95 (the patch from the Island Paradise). This is causing my launcher to act wonky, sometimes it downloads content but doesn't add it to the game (saying make sure the game is updated completely before playing) and other times it just won't download content ("There was an error downloading content 7664918"). Is there a way to fix this without having to uninstall and reinstall my games?
October 2015
the last and latest patch is 1.67 see here http://answers.ea.com/t5/The-Sims-3/FAQ-Current-Patch-1-67-Manual-links-and-more/m-p/67858#M3515
back up your stuff first http://sims3.crinrict.com/en/2011/03/faq-what-files-should-i-backup.html
October 2015
I don't have Back to the Future shouldn't I skip that patch?
October 2015
the patch inculcated fixes for people that certain store items and have into the future expansion and or who may get that pack in the future ( pun intended) also if your not patched up some store items you may not be able to download because your way under the patch level