[never_mind]

Here are my general BG troubleshooting tips, written in order:
-try setting the "save" folder to read&write (check after to see if it stays that way).
-try deleting the "tempsave" folder.
-delete the "temp" folder and make a new, empty one in same place.
-make sure your running bg2 as administrator.
-restart comp
-Play.

Hope that helps! Some combination of these methods has helped me through all problems.
edit: Other good things to check for: most updated version of game
re-install game
re-install using different copy of game.