One of my customers contacted me today saying that they’re getting an error when they try to load ExactFlat. A message box comes up saying “Unable to load ExactFlat.rhp: no class derived from CRhinoPlugIn in plug-in file.” This is a new error that the customer was not having last week. The plug-in version has not changed, and no updates have been made to Rhino since last week. I’ve had them uninstall and re-install just in case something happened to the plug-in, but that’s not helping.
The plug-in is being run on Version 5 SR9 64-bit (5.9.40609.20145, 9-6-2014). I’m currently running the exact same version, and ExactFlat loads just fine for me. I haven’t had any other bug reports of this nature.
I’m at a loss as to what the problem may be. Nothing has changed. Any ideas?