I am playing with the XFCE version again : )
I noticed in 13 there is still the issue where programs like TrueCypt that assume you have Nautilus error out...
There is a simple fix for this I have seen before, this particular version of the fix comes from Furumaru on the bbs.archlinux.org/
Basically you make a script in /usr/bin/nautilus which contains
exec thunar $3
Mark it executable and it fixes the issue. Has this been fixed in 14? I think Mate had this issue too...
Edit: Marked as solved as I am mostly sharing a fix.