Any modification of the game can result in unexpected problems seemingly unrelated to the mod.
I suggest you clean everything out, uninstall the game and reinstall.
Delete the GTA_SA.set file and reboot.
Play the clean install game to be sure it still works.
Then install your mods/cleos, et cetera, one at a time playing the game before you install the next to be sure it is still working.
When you get to the one that is causing you the problem (or another problem) don't use it. Or go to the modding forums for help with it.
The San Andreas Forum is for unmodded game problems and questions.