[grand.Theft.Otto]

I forget how I fixed it, but try reinstalling your gtaweap3.ttf font here:

http://www.mediafire.com/?fdjjmt5ymey6vtg

delete the old one (if you had an old one) from your C:\WINDOWS\Fonts and replace it with the downloaded one then go onto SA-MP and try, if it doesn't work, restart your computer then start SA-MP again.