I have a server with a folder on it called cases. One day for no apparent reason all the documents in this folder and sub folders are no longer accessible by all workstations. These are Word 2003 and WordPerfect 9 documents. The WordPerfect message is "unsupported format" and the Word message is unable to convert. This only happens to all files in the main folder cases. There are a few other folders on the server that have miscellaneous documents. All of those documents are completely accessible with no error messages. Help!!!!