Running Windows XP, 4G RAM, Audiophil 2496 sound-card, Gigaplayer as plug-in, crushing very frequently;"fatal error occurred" and most of the time the work is lost. Have been in touch with Support, got advises to optimize the computer, followed the advise, crushes are less frequent, but: Every time when mixing down MIDI, using Console view to change volume of trucks, after a few bars have an envelope, Sonar X1 crushes. When I manage to have a few tracks with envelopes, and try to move the nodes to fine tune the volume, X1 "fatal error " is there. Why? I do have enough memory, my computer was optimized for audio, hard drive de-fraged, no internet connection, only MIDI, I am desperate, thinking to delete X1 and load up one of the old Cakewalk programs and live with it. Can anyone help, before I do this?