There should be an error message in the log, describing the problem.
If not, you can enable the TRACE log (which will slow the server quite a
bit), and see the last operation and parameters there.
You might also try to upload the package through the http interface:
http://localhost/mapguide/mapa
Is there any way for the log to say what file is actually missing. We have a
client that is loading 150MB packages at times and when you get this error
is very frustrating. How do you know what went wrong? If you don't know what
DWF is missing how can you fix? Right now my only answer is sorry you