First - sorry for my bad english.
i have Kindle 4NT, grey, I have installed Cool Reader 3 and Librerator, when I installed for the first time LibreratorR2, I have problems with starting of CR3, it writes that I don't have permission of the autor or so. This problem doesn't exist with the Librerator R1. So, I now have installed both, but when I copy Librerator, I didn't copy the launchpad folder. Now works just fine.
Librerator is realy good program, but I miss some more font sizes.