I think this is not really needed since self._mini should exist. The issue is that "self.set_project(project_obj)" is being called before the initialization of self._mini. I think that a better solution would be just move the line "self.set_project(project_obj)" just above the comment "#Context Menu Options" on line ~196 in editor.py (Or move the  initialization of self._mini to above the self.set_poject(project_obj) call) that way we avoid the hasattr(). Suggestions? @diegosarmentero  @perrito666