Click Add, navigate to your GTA Vice City folder, and select gta-vc.exe. Apply and restart your PC. 3. Clear the Settings File (gta_vc.set)
The Ultimate TL;DR Fix:
For the Steam version or heavily modded versions, many users recommend the SilentPatch. This community-made plugin fixes numerous engine bugs that cause these memory exceptions. Download and install the SilentPatch for Vice City.