Sometimes uninstalling a program doesn't always remove all the files, some of which (settings, saved projects etc) might be left on the drive in case you re-install the program again and your original (possibly corrupted) settings would be restored. Try unistalling it again, then in the project files directory locate the installation directory and delete it (if it's there), before reinstalling it again.
You might also want to look here:
http://support.broderbund.com/fix.as...9935&printer=1
for a possible solution regarding corruption of the files which handle your Art Gallery (if you haven't already).