Actually, that error code contains a wealth of information and you can find out all about. Go directly to MS Support page and do a search (takes about three seconds) for the error code. It will give you a direct answer. I'm guessing the file has a long name ro was changed to a longer name. If this is the case, change it to something shorter. I have had to do this many times with LW files in WMP. It isn't LW's fault it is the fault of the choder head that exceeds the allowance for filenames. LW didn't corrupt the file it was probably confused when the file was changed--yes even annotated. I believe WMP attaches annotations in the string for the filename though you don't see it.