old_contents: 
  bl_info = {
    'name': "Import: .EDM model files",
    'description': "Importing of .EDM model files",
    'author': "Nicholas Devenish",
    'version': (0,0,1),
    'blender': (2, 78, 0),
    'location': "File > Import/Export > .EDM Files",
    'category': 'Import-Export',
  }
  
  try:
    import bpy
  
    def register():
      from .io_operators import register as importer_register
      from .rna import register as rna_register
      from .panels import register as panels_register
      rna_register()
      panels_register()
      importer_register()
      bpy.utils.register_module(__name__)
      
    def unregister():
      from .io_operators import unregister as importer_unregister
      from .rna import unregister as rna_unregister
      from .panels import unregister as panels_unregister
      importer_unregister()
      panels_unregister()
      rna_unregister()
      bpy.utils.unregister_module(__name__)
  
    if __name__ == "__main__":
      register()
  except ImportError:
    # Allow for now, as we might just want to import the sub-package
    pass
new_contents: 
  bl_info = {
    'name': "Import: .EDM model files",
    'description': "Importing of .EDM model files",
    'author': "Nicholas Devenish",
    'version': (0,0,1),
    'blender': (2, 78, 0),
    'location': "File > Import/Export > .EDM Files",
    'category': 'Import-Export',
  }
  
  try:
    import bpy
  
    def register():
      from .io_operators import register as importer_register
      from .rna import register as rna_register
      from .panels import register as panels_register
      rna_register()
      panels_register()
      importer_register()
  
    def unregister():
      from .io_operators import unregister as importer_unregister
      from .rna import unregister as rna_unregister
      from .panels import unregister as panels_unregister
      importer_unregister()
      panels_unregister()
      rna_unregister()
  
    if __name__ == "__main__":
      register()
  except ImportError:
    # Allow for now, as we might just want to import the sub-package
    pass
subject: Add registration fix