Game Crashing when i try to knock someone down

[zjerryable]

Hey fellow dragonborns, as the title says whenever i try to knock someone down after getting them low my game crashes to the desktop. Everything else is working fine it's just this one problem. Anyone have any ideas on how i can fix this? I'm sorry if it was a pain in the butt to read this topic, but i'am very aware of my awfull English. Thanks for taking the time tho. For Skyrim

[aqqh]

Do you use any kind of combat mod? Defeat / Submit?

[lostami]

Hmm Some recent modding activity would help narrow down the issue, what have you modified or added within a reasonable time frame before you got this issue?