Some of you (that have a specific setup) might have noticed that you have an extra profile in your Windows 7 C:\Users directory. MCX1-%COMPUTERNAME%. I noticed mine when it started adding the following line into my backup results:
The backup completed but some files were skipped.
Backup encountered a problem while backing up file C:\Users\Mcx1-CPL-SHOE\Contacts. Error:(The system cannot find the file specified. (0×80070002))
Backup encountered a problem while backing up file C:\Users\Mcx1-CPL-SHOE\Searches. Error:(The system cannot find the file specified. (0×80070002))
I wasn’t sure why that profile existed in the first place, and didn’t appreciate it mucking up my backups. I was poised to just delete it, when I realized that might be a silly move. Research twice, delete once. (see item #9 under ‘Set up Xbox 360 as a Windows Media Center Extender’)
So the profile was legit, it was created when I connected Media Center to my Xbox 360. So how do I make my backups quit complaining? What if I just made the folders? Would that satisfy it? It turns out it does. I created two empty folders named C:\Users\Mcx1-CPL-SHOE\Contacts and C:\Users\Mcx1-CPL-SHOE\Searches, and it was happy.
After all this, I ran across this Microsoft article which goes into much more detail about why backup wants to back up those folders despite their non-existence. But in my humble opinion, just create the folders and move on unless you want to spend your weekend optimizing your registry.