It's very simple. The CreateFile Windows API to open the file returns INVALID_HANDLE_VALUE. That means the \\server2900\fpa\fpuser.dat file is not available (file not found) or the network share is not accessible (in fact, that also means 'file not found').

Just for fun, try the "If File/Folder..." script function to check if the file exists and I am sure you'll get the same result.

Perhaps a permission problem!?

Friedrich