[iZN]

That must be something related to messed up .dll files inside your GTA San Andreas or probably a virus. Try out the following methods which may work out:

- Re-install GTA San Andreas.
- Re-install SA-MP.
- Do not install any modification to GTA San Andreas. Remove any modifications you've installed or just see the first point.
- Try renaming your GTA San Andreas directory to some other name.
- Scan your PC with antivirus for any possible virus.