Occasionally, upon creating a cyclic backup, the backup (seemingly randomly) creates an archive folder in ...arc_090210201804006\user\ with a name of "00000000.000000" rather than the name of e.g. "20100607.030031" (the time stamp). I have now finally been able to confirm that this occurs on nights that Windows backup runs. Not sure why, but that's the correlation. Paragon Drive Backup™, version 10.0, build 9105 (18.11.09 ) Professional Edition Components versions: Paragon Base Services Library, version 1.1, build 9105 (18.11.09 ) hdm.dll, version 10.0, release 10, build 10505 biont.dll, version 10.0, release 10, build 10505 biont.sys, version 10.0, release 10, build 10505 Hope this helps for a small bug fix at some time in the future.