christoppalm posted a topic in Device and Hardware Compatibility-WindowsSince I upgraded from Retrospect 8 to Retrospect 11 (for Windows) I have been seeing errors in my log files:- ArcDisk::arcExportSessionFileTo: failed to create "AA131168449483580000.session" (28/08/2016 08:02:28): error -1101 (file/directory not found) ArcDisk::RDExportSessionFiles: failed to save session tree 28/08/2016 08:02:28 error -1101 (file/directory not found) - although Retrospect reports "Execution completed successfully" I have read the post "".session" files stored alongside ".rdb" files new to Retrospect v13?", and I understand from this that .session files are a new feature in Retrospect. I am backing up to a NAS drive (WD My Book Live Duo). I have checked the backup folders on the drive, and there are no .session files there. My main question is: do I need to do anything about this? Beyond this, why am I receiving these errors? I installed Retrospect, and just continued with my existing backups. Should I have done something different?