I have a similar problem with the crash issue. I have the same problem with the game going back to the title screen, but I just right click and the lemmings begin rolling the yellow scrool at the bottom and I left-click to continue the game normally and I can continue playing. This doesn't bother me... however, I have a much bigger issue than that... (This is when I am running 0.72). When I begin a level, I get this odd graphics problem at the level preview screen where the colors look "inverted" and messed up. The only way that I can play the level is when the colors are inverted again at the level preview. Every once in a blue moon it will look normal but I am unable to click to continue playing... when I right-click, the colors go "inverted" and I can continue to play. This is very annoying. When I use 0.63, this problem is fixed, but still sometimes goes randomly back to the title screen... but the music skips every so often. Can somebody help me???!