Several users have recently been experiencing an issue when trying to check-in a document into a SharePoint Library. Microsoft Windows Explorer notifies them that "This document was checked out to your local drafts folder but the local copy could not be found or is on a different computer. Upload the local changes or discard your check out to continue editing." We use MS SharePoint 2010; my team uses MS Office 2007 for document creation; our current practice is to save all documents to 2003 (.doc, .xls, .ppt) as many of our wider colleague base still operates MS Office 2003. How can this issue be resolved to allow us to successfully check-in documents into our SharePoint Library without losing changes? Thanks.
N.B. This issue has occured for a handful of users. Most have had no problem checking in the same document.