I realized that writing about it in previous topic, which was marked as done may not be the best idea. _____ My game crashed when I tried to enter CMachine, but now reason seems to be different. Optifine is disabled since last problem. I was able to travel in/out machines rather fine. (nothing worse than standard crash/ few minutes lag like when changing between any dimensions.) Code: java.lang.IllegalArgumentException: Could not get provider type for dimension 3, does not exist It seem that CM transported me to nonexistent dimmension or something like that, or tried to transport me before generating one and failed on some part.