Ubuntu :: Keys Won't Bind When Running Fluxbox On Xubuntu

i'm running fluxbox on my xubuntu 10.10. I'm just trying to set up the key file and the keys i enter will randomly not bind. Like for example:

# open a terminal
Mod1 F1 :Exec x-terminal-emulator
# open a dialog to run programs
Mod1 F2 :Exec fbrun
# filhanterare
Mod1 F3 :Exec thunar
# textredigerare
Mod1 F4 :Exec notepad

terminal, fbrun and notepad works fine but not thunar. i've tried a million different combos of keys and modifiers and it seems totally random weather it works or not. sometimes what works one minute don't after next reconfigure.

When i run the original keys-file i get this log output:

Keys: Invalid key/modifier on line 66):

I get similar outputs when i change the keys-file for other numbers too but it doesn't seem to happen for every key that doesn't work.