Hello there, let me first say, thank yo so much for this great mod and all the hard work you are doing on it. I, personally, appreciate this mod so much, I love it.
I'm playing on 1.2 on OSX currently and have followed all previous instruction to install the working dev version. I am noticing some of these bugs you all are speaking of here but I am also experiencing one that I haven't seen anyone comment on.
Basically, I can't close ANY of kER's windows, if I try, they replicate. If I try and move them, they replicate, if I select any settings in the window of KER in one of the buildings (VAB&SPH), it replicates. While I haven't tried replicating any one window more than once, turning off KER in game seems to close the replicated window while the other remains, so I left it at that. This occurs both in SPH and VAB but also in flight too.
I am, by no means, a programmer or can even claim to understand most of what I'm looking at but the KSP log file seems to be pretty normal with nothing unusual sticking out about KER, seemingly...perhaps I can't see what you might. I would be delighted to upload a copy of my log file for you but I am trying to figure out how to do that, stand by.