I found a problem here. Don't know what causes it, but it's really bad. So, after spending some time playing with the test stages, I figured I'd download some other levels to see how well it works in an actual level. You know, run it through it's paces and see how well it works in normal use. I went on YouTube and downloaded a level called "Seaside Palace". It looked very well designed and fun to play though, and it looked like it would make a decent level to do a test run in. I followed the directions to insert the level, simply unzipping the folder into the "Stages" folder. When I started the level up, I had absolutely no lighting, textures, or anything. The sky was plain white, and all terrain and objects were completely black. I'm pretty sure Sonic was invisible completely, or if he wasn't, I couldn't see him. Is there a difference in how your test levels work compared to a normal level? If so, what should I do to make a normal level load properly? If not, then this seems like a pretty big bug. I've seen the stage run on videos using older versions of the BlitzSonic engine, so I'm fairly certain it isn't the level. If you want the level I used to test this, just search "Seaside Palace" on YouTube, you should be able to find it easily.