'Backup' won't back up this folder

[tech4all]

I just backuped some pictures (3GB worth) to my PC on my network. Now I am trying to back up some more files to the same location, however I get something that says, "Backup can't copy the file....You may not have appropriate privileges for the source or the destination." I know I have permisions to do this, I think....That is the only folder (so far) that I get this error with. Any ideas? :confused:

btw: PC running Windows XP home.

[tech4all]

Ok I just attempted to back up the same folder to my iPod and it worked liked a charm.....