If playing the game for long periods of time, the engine may leak memory, which makes the game unstable and crash. Memory Access Violation randomly during gameplay: If all files are present, make sure the game is unarchived (do not run this game through 7zip or WinRAR!) If it is a save issue, you will need to move/delete your save file (refer to “Having Save Issues?”) This means either your save is corrupted or that you are missing files. If you have Win 10, it could be a hardware issue and all you need to do is right click the Sonic World.exe, select Properties, under the Compatibility tab, and make the exe run under Win 8 or below.
There are many causes, making it near-unfixable. Memory Access Violation is a general error message in the Blitz3D engine. This is the most common way to fix startup/save MAV’s.C:\Users\YourUser\AppData\Roaming\Sonic World