I'm having the exact same problem as felonius and snowski... I had developer access working until I installed 2.12 a couple of days ago and pushed the developer package.
It definitely seems that the developer package is getting installed since the screen blinks on clicking, but the scripts are not running.
I reflashed (full "format") back to 2.10 and re-installed all the updates and developer package and I have the exact same problems.
I wonder if it has anything to do with the model?
I have ER0100-002
What do other people with this problem have? (and those who don't)
Everything else seems to be constant...
Software version: 2.12
Software build number: 21200
Kernel version: 2.4.19-rmk7-pxa-irex1 #21200