Exception access violation

[Cranky Old Man]

Thank you for a quick reply. I joined for this reason. Is it a good idea to keep building on the custom story and just have others test for me!? Because the main Amnesia campaign, Justine, and almost every mod I've downloaded has worked 100% for me. It's just my own custom story that fails on me and I don't know why. It may be the 5,000+ entities in two small rooms, or whatever else it could be, I'm just glad you could pinpoint the problem on my HPL. I can't really buy a new video card at the moment, but thanks so much again!

Your graphics card can only support OpenGL 2.0. Amnesia requires OpenGL 2.1. Buy a new graphics card.

Well, despite the lack of 2.1, if the original game renders just fine, then the problem is probably elsewhere.
In that case, have your custom maps ever worked?
Have you set up a proper development environment for custom mapping (according to the wiki)?