I had this same problem and I just fixed it. Heres what you need to do.
1. Go to C:\Program Files\MTA San Andreas\server\mods\race
2. Copy all those files. It should have a Maps folder, mtaserver, mtaserver.conf, race.dll, vehiclecolors.conf
3. Paste those 5 files to C:\Program Files\MTA San Andreas\mods\map_editor
That should resolve any issues you have. If It doesn't help let me know.
Now it starts up but goes to the screen just before the options, then closes and the MTA error report comes up when I log in its says unrecoverable error.
MTA wont run any more the "stop playing with yourself" splash comes up then the curser changes to the cd like its trying to read the disk then goes away and nothing happens same with GTA SA. I tried to reinstall both MTA and GTA SA and made sure that my firewall wasn't blocking anything needed to run the apps, I have V.2 but I have downgraded it. Also I deleted gta_sa.set because I heard it gets randomly corrupted, I don't have any mods or a no_cd patches either, and yes I have restarted my pc. All this and to no avail. Please help me out.