When we try to delete certain files, we receive the error:  "Index out of range...." and the file is not deleted.  This does not happen with all files.  What does this error message indicate? 

Thanks Mitch.  Now you know I'll have to ask how to do a recursive file sync : )

I don't think I have the recursive file sync.  I have a link at the bottom of the page that is for database and file synchronization.  We're still on DNN 2.1.2.  Is there another way to sync the database with the file system?  I'm not sure how I did it, but the files in file manager have been relocated from portals/0 to portals/15 directory.  The links under the document module are still pointing to the portals/0 directory and I kicked out of the portal.  When I look at the log it tells me it cannot locate the file in ...portals/0.  Physically the file is in portals/15 but I think the database still thinks its portals/0.  Any suggestions?