' INFO : 4011 - Import/Export .xsi: The dotXSI.dll (NT) or libdotxsi.so (IRIX) is missing or the class is not registered.
So I attempt to run "runonce.bat" as admin only to get this error...

Any way to fix this without a complete reinstall? I also have my environment variables set correctly. I would just try to redownload the 2015 crosswalk installer since that probably contains those files so that a full reinstall wouldn't be necessary but the download on the autodesk website doesn't have the files needed, just plugins for Maya and Max for 2015.