I have been lucky so far in that I had used Terabyte apps with success and had no problems, then installed FDISR and there seemed to be an almost perfect blend for my humble needs: all smooth sailing.. HAd (against most advice I suspect) used registry cleaners, and, as part of rejigging partitions had been shrinking and imaging and moving and reloading with BING:shrinking partition ;for smaller image file; physically moves data blocks on partition. Then 5 weeks ago I went to create a new snapshot in FDISR to fool around in and S##T; >2000 errors . Ok, able to boot back to primary,remove reboot reinstall (the three "R' s" of computing) and go again. OOOPPPSSS same 2000 errors relating to registry. E-mail to Raxco: nice non-confrontational congenial exchange of data logs given new copy of ISRCopy.exe repeat, same errors. Dream run over, thinks I. Over the subsequent three weeks I and raxco support exchange mail 2x/wk with logs and revised copy engines no success. After last failure,I then had to take a break from www for work/family/holiday, came back to find enquiry as to my wellbeing and where I was up to, and did I want to keep going? Reinstalled new copy engine and success! No errors on creation of new snapshot. Here is message from developer (have permission to reproduce this), doesn't mean all that much to me. I asked for explanation in easy to understand terminology LOL: AND;From me to Raxco: . Response: Conclusions: 1: my box is so damaged I need special edition of ISRCopy.exe LOL 2: Raxco support rocks. Regards PS I wonder whether this type of scenario is why Raxco is being "slowish" with update as they consolidate their experiences to date.