I am running Windows XP Home SP2 with TI 8. I upgraded to the latest build of TI8. I have read dozens of posts on this problem and I have tried every suggestion and still the dreaded 1722 error. TI had worked fine for me for the last 8 months and now this error. I uninstalled TI 8 and tried the trial version of TI9, but still the same error persists. Evidently the unistall does not clean the registry (or some other files). I can still look at my old images (now about 2 weeks old), but cannot create any new ones either manually or scheduled. I am willing to upgrade to solve this problem. Can anyone help or do I have to look for other software to back up my image?