in 10.1 my interact key stopped working. i'm not sure if this cvar was there before, or if it was added for 10.1, but to fix this check the 'softtargetinteract' cvar. after updating the addon, this was set to '1' which makes interact only work when using a gamepad. set to '2' or '3'. - how did this happen though? if it was a new cvar, perhaps the addon update loaded it in as '1' for a default, but not many people use pads so i think it should have been '2' or '3' instead.

i've been wracking my brain to figure if something else could have changed this option, as it certainly was not me. not the kind of thing you can do easily or unconsciously.