TI 11.0 (build 8,053) Win XP sp2 Although, as mentioned in my previous post, uncompressing my backup partitions solved some problems, I have one remaining problem. If I mount an image in read-write mode, TI creates a corrupt differential backup. If I try to mount that differential backup, the screen says "Selected file is not Acronis True Image Home archive or is corrupted." Any suggestions as to why this is happening? I didn't actually modify the original image, and I mounted the original image, not the differential backup that had been made the night before. Thanks in advance.