So I'm here still in the room and I found a Bug like this like @Slasher05
But not desame Procedure
1st: Put a Main weapon I use Nutcracker sword +16
2nd: Start the game after the loading I accidentally press the Switch weapon while in the story mode
3rd: Then I casted the IS of Aegis Knight then it just bugged becuz of the lag of GCT1.3 Freeze monster but I didn't try the switch weapon key I just remain Aegis till now 5:15 Today Dec. 28,2012
Note:
1.)This is just a chance that this bug occurs. Because sometimes it doesn't work.
Tested In Gcph
Proof: