[Kane]

My lev 18 fighter dualed to lev 13 thief; has recently lost the ability to set traps.
I've no idea why. She had been quite happily setting them as a low level thief but for some reason cannot do it anymore.
All her other thieving abilities ie. pick locks etc. are intact.
Ive tried removing all equipment but that doesnt have an effect.
Is this a bug can anyone help.
Also i have the patch installed.
HELP!!!!