I'm running a very recent nightly and started noticing the following error showing up in the MODx Error log:
Instantiated a derived class sources.modFileMediaSource that is not a subclass of the requested class sources.modMediaSource
I am not personally using Media Sources yet, and have left everything as "default" so far.
Has anyone else that has tried MODx Revolution 2.2.0-dev seen this particular error in their MODx error log? Any ideas on where to start looking?