I didn't have an issue with disarming traps yesterday. Astarion passed his Perception checks, I right-clicked on the trap to bring up the menu, and Disarm was an available option (not greyed out) and he disarmed everything.
It's possible that you were walking alongside someone else in your party that they passed the Perception check, but your Rogue failed it. As long as the character who passes the Perception check has the ability to disarm traps and you have a trap disarming kit it should work.
Nope.. I had separated from the cleric and was running around the crypt room by myself. I found all the traps on the floor (disarm greyed out.) Uncovered all the gargoyle heads (disarm greyed out) and of course the button.. which I could only switch off after the trap went off.
I haven't found another trap since I picked up the rest of the characters so I'll just have to wait until that happens. I also haven't found any sort of "trap kit." I've found plenty of thieves tools though.
