docs: def loadInstance(self):
          """
          Loads the plugin from the proxy information that was created from the
          registry file.
          """
          if self._loaded:
              return
  
          self._loaded = True
          module_path = self.modulePath()
  
          package = projex.packageFromPath(module_path)
          path = os.path.normpath(projex.packageRootPath(module_path))
  
          if path in sys.path:
              sys.path.remove(path)
  
          sys.path.insert(0, path)
  
          try:
              __import__(package)
  
          except Exception, e:
              err = Plugin(self.name(), self.version())
              err.setError(e)
              err.setFilepath(module_path)
  
              self._instance = err
  
              self.setError(e)
  
              msg = "%s.plugin('%s') errored loading instance from %s"
              opts = (self.proxyClass().__name__, self.name(), module_path)
              logger.warning(msg % opts)
              logger.error(e)