http://imgur.com/gallery/HLaGw I get this error message at start up each time since today. Any ideas?

Alright, so I'm using the rocket launcher set up in front of the megaton door (Thanks, petite_miku for the guide) and I'm getting consistent results in achieving the cripple without being truly crippled. I come out of the quick load with the crippled foot step sound and animation but for some odd reason I gain very very little to no speed each time. Am I doing anything wrong to achieve this or am I the victim of my game bugging out? I run the game vanilla and the only changes is I used the multicore processor fix. Many thanks to anyone who may help!