Why you have put the file back on the server even that you made no changes to it?!
Try to transfer the .fmb on your system to server in Binary mode and generate .fmx.
That will fix the issue.
Chiranjeevi M A
Have you applied any patches? Please do relink of executables.
I think you are not running with proper syntax.
f45gen USERID=userid/passwd@host MODULE_TYPE=FORM MODULE=<form Name>