Maya 8.5 Cal3D exporter not working

[Prune]

My boss has Maya 8.5 Unlimited, and I put the plugin in the plugins folder and cal3d.dll in the bin folder, and Maya detects the plugin but when I try to load it it gives me error: the specified procedure could not be found
I even tried different versions of cal3d.dll, including one I built, and others from the Cal3D binary distributions and from a separate 3D studio exporter.