I can't find anyone with exactly my error or fix. I keep getting a runtime error trying to backup (scheduled task) of my E drive (where my OS is and application data). I have tried using various external drives as the backup location (both USB and Firewire), but the error still occurs either roughly 26% or 47% the way through. My OS is XP Home, SP2. Saying the usual thing: Runtime Error! Program E:\Program Files\... This application has requested the Runtime to terminate it in an unusual way. Please contact the applications support team for more information. Sometimes after the runtime error window closes another opens and says "The exception unknown software exception (0X40000015) occurred in the application at location 0X01757c6b." This usually happens with the Firewire drive. Other times I get the choice to see more info and it goes to the mircrosoft error page on the net and says it's conflicted with McAfee SpamKiller (I then disabled all McAfee software - but still came up with a runtime error). I upgraded to TI 11 from 10. I haven't used 10 for a while, but had no problems before. I uninstalled TI11 completely then reinstalled. However this did nothing to solve the problem. Any ideas? The log for the task itself says nothing about the error... it just stops the operation.