fufps Whoa ? That looks like the player marker texture ? No don't just delete your flak folder, it's needed.
Your installation got messed up somehow. Do you have only one fpsc installed or another version also ?
I would just do a reinstall and see if it fixes this first. But don't delete folders, alot of this stuff is hard-coded
and will only cause more problems.
Just try a reinstall on top of this one and see if it fixes it so you wont lose any other packs you have
before doing a whole clean fresh install?
One thing first though, is that one of the EAI hand weapons ? ( the wizard spell ones ) Does that hand have flak ???
Did you change something in that weapons gunspec ???
My games never have bugs. They just develop random features..
Lots and lots of random features...