For those of you that downloaded the game before the infamous 1.0.3. update, (roughly back in November 2014) you can retrieve version 1.0.2. (the one that works) only if you have ever backed up your computer on Time Machine, iCloud, or an external hardrive. Search Grand Theft Auto’ until you find version 1.0.2. in the description of the file. Copy or re-download those files, and put them on your desktop or something. Then, you can delete version 1.0.3. from your computer as it no longer serves any purpose. Good luck
Represent O-Town about Grand Theft Auto: San Andreas, v1.0.3