M33 Installation Package Activate
ATP + protein M33 ( GRK2 is a potent regulator of the mouse cytomegalovirus GPCR protein M33-induced Gq/11 signaling through its ability to phosphorylate M33 and sequester Gaq/11 proteins dependent on an intact RH domain, the protein M33 is able to induce inositol phosphate accumulation, activate NF-kB.
And here's the stacktrace trying to load M33 Fio in Octoprint 1.3

M33 Installation Package Activated
2016-12-09 23:20:04,001 - octoprint.plugin - ERROR - Error while calling plugin m33fio
Traceback (most recent call last):
File '/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.0-py2.7.egg/octoprint/plugin/init.py', line 229, in call_plugin
result = getattr(plugin, method)(*args, **kwargs)
File '/home/pi/oprint/local/lib/python2.7/site-packages/octoprint_m33fio/init.py', line 5357, in on_event
self.setFileLocations()
File '/home/pi/oprint/local/lib/python2.7/site-packages/octoprint_m33fio/init.py', line 5238, in setFileLocations
self.savePrinterProfile()
File '/home/pi/oprint/local/lib/python2.7/site-packages/octoprint_m33fio/init.py', line 886, in savePrinterProfile
self._printer_profile_manager.save(printerProfile, True, not self._settings.get_boolean(['NotUsingAMicro3DPrinter']))
File '/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.0-py2.7.egg/octoprint/printer/profile.py', line 255, in save
self._save_to_path(self._get_profile_path(identifier), profile, allow_overwrite=allow_overwrite)
File '/home/pi/oprint/local/lib/python2.7/site-packages/OctoPrint-1.3.0-py2.7.egg/octoprint/printer/profile.py', line 370, in _save_to_path
raise InvalidProfileError()
InvalidProfileError