Maya: Allow to select invalid camera contents if no cameras found

openpype/hosts/maya/plugins/publish/validate_camera_contents.py

@@ -40,7 +40,14 @@ def get_invalid(cls, instance):
  # list when there are no actual cameras results in
  # still an empty 'invalid' list
  if len(cameras) < 1:
- raise RuntimeError("No cameras in instance.")
+ if members:
+ # If there are members in the instance return all of
+ # them as 'invalid' so the user can still select invalid
+ cls.log.error("No cameras found in instance "
+ "members: {}".format(members))
+ return members
+
+ raise RuntimeError("No cameras found in empty instance.")
 
  # non-camera shapes
  valid_shapes = cmds.ls(shapes, type=('camera', 'locator'), long=True)