Can’t install Timeserv

I’m trying to install Timeserv.exe on our backup PDC and I get the following error:

The image file C:\\\Timeserv.exe is valid, but is for a machine type other than the current machine.

Now I’m running NT Server 4.0 so I don’t see why is would have a problem running on this. I copied the timeserv.dll with it in the system32 directory and the timeserv.ini file is configured in the winnt directory. Anyone have any ideas?