You could try installing them manually. Unzip the attached file and then move the individual folders inside the MIOPluginPresets folder to this location on your user drive:

~/Library/Preferences/MIOPluginPresets/

Your user library is hidden from you by default. Hold the option key while choosing the "Go" menu in the Finder, and choose "Library" from that menu.  Or alternatively, in the Finder, type Command-Shift-G and paste the path above to get to that folder.