I don't know if this is relevent at all (I missed the original thread), but the topic "Invalid Seek Offset" caught my attention. I often see this message when I am attempting to rebuild an application (BUILD APP whatever FROM whatever) on a client's machine when they happen to be running the app (I then have to call and ask them to get off). The *FIRST* time this happens, I get the error message "Invalid Seek Offset." The *SECOND* time I try to rebuild the app, I get the more appropriate error message "File Access Denied." Peculiar...