The Mfg program JT_Labor_bus.pvc is missing a programming routine used by the Mfg Imports (does not contain the SetMfgImportVars method).
The client needs to get the latest JT_Labor_bus.pvc program or service update for PM with this programming included, it should have become part of the PM product when it was added this summer, so the client may possibly be on an earlier SU for PM. We may need to look at this program to verify it has this code in the latest PM release.
If the PM support can send the JT_Labor_bus.pvc and copy to /mas90/JT folder it should remedy this problem provided the programming is still there, it is supposed to be. I would suggest updating their PM to the latest service update, then reinstall the PM imports.