im having a very similar problem too. let me just describe it, as it maybe slightly different. i start my backup job (mirror, but full also gave the same problem). its probably around 50gigs, and i have more than that on my destination (external) drive (seagate freeagent go 250gig). roughtly around 85-95% into the backup, i get an error message:
error running backup job "my backup"
cannot create directory "etc etc"
Retry or cancel backup?
if i unplug my drive n plug it back in, and hit retry, it continues, but the same error pops up for the next directory too. n it also skips some files.
once i hit cancel, i get this message: Backup aborted. Reason: the system cannot find the specified file. and asks if i want to view the log etc.
the log file is normal, until it gets to the end, where it all went wrong. i have many many entries of something like this:
[1/10/2011 14:39:54] Warning: Skipping file H:\My Pictures\Birthday 05-02-2007\DSC03280.JPG
Destination error (code 2). The system cannot find the file specified. I:\Backup\H\My Pictures\Birthday 05-02-2007\DSC03280.JPG.
it is not just one folder. i tried doing this "My Pictures" folder separately, and it completed fine. but when i tried to run another backup job with the rest of the folders, i got the same error on another folder. i tried splitting up the job into two different ones: the first one completed fine, the second one gave the error, again at around 90% completed. also, after this error, my hard drive cannot be read. it shows up in as a drive, with all the folders, but when i open a folder, its empty.
im running windows 7 x64. please let me know wat i could do. im running out of ideas!
if this is the wrong place to post, let me know n i'll create a new topic