I, too, am having problems with Organize Series and the Editor. I am getting the Source editor toolbar superimposed on top of the Visual editor toolbar all the time.
I’m using WP 3.3.1, Organize Series 2.4, PHP 5.3.6.
I auto-updated WP today and auto-updated the plug-in. I’ve disabled all plug-ins except for OS and the issue remains.
This is what it looks like: Screenshot Here
