Tool gun lua error

I need some help theres a lua error with my tool gun. Whenever i switch to it it has a lua error spam. I also noticed the text is messed up on the tool gun display too (the lua errors had something to do with that.)

http://www.facepunch.com/showthread.php?t=892983
http://www.facepunch.com/showthread.php?t=892135
http://www.facepunch.com/showthread.php?t=892063
http://www.facepunch.com/showthread.php?t=895552