I imported it to GM 8.1 the moment I got my hands on it, but already there I saw changes in the way the program works. People mentioned that my fonts suddenly looked awful, and certain things glitched when I tested my 8.0 project. Plus, some functions have changed and some extensions needed to be updated. It was too much work to port it over and too little to gain from a rewrite, so I kept going on 8.0 instead. Now, with GM:Studio and a lot of knowledge gained in the past few years, the benefits of rewriting the engine are far greater, while the ability to port an 8.0 project is getting even more pointless. Thus I will be doing an engine rewrite, which will hopefully turn out as well as I have said it will. So yeah, until that happens the old engine is kind of unstable on Windows 8, and I am sorry about that. I am running Windows 8 myself on my current laptop, so I will at least be able to check out the same problems you are having -- I too crash when the Lightning Balls are used, for some reason. To be more precise, they seem to crash if a regular Lightning Bolt attack is used at the same time as the Balls. Dunno why. There is no special code in them compared to, say, the Olmak or the new Toa of Iron sawblade (which you will get this weekend, yay!), and they do not appear to have this problem. Ah right, so you're already working on that! Ok, guess I'll ust have to be patient *sits in corner* Just for a curious question, what scripting language does Game Maker use?