I have been working on a project for a while now using blender 2.5 alpha 2 and I recently downloaded version 2.53. While working I have switched back and forth between both versions of blender and now I have this strange glitch. When I try to render (in either version), blender crashes. However, if all of the objects in the scene are hidden in the 3D viewport then it renders fine. It is just this one project that has developed this problem. Has this happened to anyone else?