Dear Michael, dear Lars, there is huge number of different configurations and versions (in total >10e9 or probably even >10e12 possible build configurations) to use meta-ros with openembedded-core and the meta-openembedded layers (so much larger than the number of users). Checking all configurations is simply impossible for this small project and hence, some issues remain unchecked. The python-imaging recipe is part of the openembedded-core layer (at least it was until three days ago as you noticed); and they provide an own mailing list to discuss issues on the openembedded-core layer.
Simply dropping python-imaging from rosbag might work, but possibly you will stumble over python runtime failures later when you need this library. Lukas
