Zeke

I have this also. Occurred in Gift after adding the paladin to group. I went back to salty mast to switch equipment, so I switched kana away from party then back into party again. After this Kana appeared as an NPC who I can talk to but cannot control. Got him in party after a few tries, of removing the whole party and then individually adding them all, then went upstairs and back again. After that I could see 2 kanas, a full geared NPC and a controllable party member with no gear. Went outside and now cannot change party members at all. Might as well restart, the game is fast and fun to backtrack if you skip all reading..

Make sure you have the latest drivers. Running perfectly 1680@120hz on w8.1 64bit, q6600, gtx470 334.89. Also check your res/hz in options. Actually the game runs glitchlessly constant 30fps even in P12 idle power state.