XFCE broken after .PET install

[dr_spork]

I installed the Chinese Input .pet package and XFCE won't start now. It boots directly to JWM, and when I quit JWM and type either 'xwin xfce' or 'startx xfce', it loads JWM instead. Trying 'exec xfce4-session' returns:

cat: /usr/local/bin/defaultspreadsheet: no such file or directory

...and I've been getting this error in other contexts as well.

If this is the problem, what file is trying and failing to read defaultspreadsheet, and is there a way to fix this to allow XFCE to work again?