"The notion of a group name for collision tags is not supported by URDF" when loading Atlas model

edit

The above warning is always printed multiple times when the URDF of the current dcrsim Atlas model is read in any node. This is very annoying and cluttering up the startup output of many-node launch file setups. I know this is a warning that can be ignored (as suggested here) but ignoring this multi-screen text also means that one might miss other more important stuff. Any tips on how to get rid of this warning or what the correct place for filing a ticket is?

/edit: This is on Ubuntu 12.04/AMD64/ROS groovy