We have a site that was running fine yesterday. No changes to anything this morning we start getting errors. If you cycle through a series of 5 forms when you get to the last one you get an error message that says "Could not use unknown, file in use". A check at MS tells us it's a permissions issue at the server. A check at the server says that the permissions have not changed. If you cycle through the forms 2,3 or any number of time in a row the last one generates the error. If there were a connection open you would not be able to cycle through the forms at all the second time. We are really stumped and so is the host. Anyone ever have an issue like this and if so what was the resolution? We have reset the server twice with no results.