If this is true then why does it load this particular level fine over and over again. But when I load another level, then come back to it, it will sometimes give me this error upon loading it and crash the engine?

As well, you still didn't explain how sys_memory calculates it's memory?

And if it is some entity that only gives errors randomly, can the engine at least tell me what entity it failed to load after the crash? After all, I have hundreds of entities, sound, and image files so it is impossible to pinpoint. Especially when the "damaged file" thing does tell you how to make a file work? Do I save it in MED again?