Getting Error on saving DR but DR file is updated.

I am running BE 2010 on a Windows 2008 R2 server. I get no errors on the media server about the .DR files, but I get them for all the remote servers. When I look at the remote servers, the DR files are updated. Why am I getting the message? How do I get it to stop?

I read one article that said you get this message if you have excludes on the backup, but all my servers have excludes and have had for a long time. This just started happening last week.