Skyrim Crashing when using Bound Sword.

[Dlamar]

My game keeps crashing when i use bound sword(or whatever the name...the sword that you summon with conjuration)...i've tested it a few times...and it always crashes when i use it.And while i don't really care about the spell it'self...i'm afraid if there are enemies in the game that use it...is that possible?for NPC to use Bound Sword?Also the papyrus logs says this before the game crashes.

 

[11/25/2012 - 02:22:06AM] RNPC: Periodic update check.

[11/25/2012 - 02:22:06AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:19AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:21AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:22AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:23AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:43AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False

[11/25/2012 - 02:22:46AM] [DLC1VampireSleepScript <DLC1VampireSleep (02008E3B)>]PlayerActivateBed() IsCoffin =False