Hi Guys
Got it fully running now!
First i suffered under the USB problem -> no devices reacting - but after trying to switch ports with mouse and keyboard endlessly, I got it running some times. However, after rebooting the same USB ports did not work and I had to switch back and forth until it was running. It sucked!
However, I have found following way, and now everything is running super smooth:
After Postinstallation I had to reboot with my 10.9.5 backup (CarbonCopyCloner), which I have performed earlier on an USB 3.0 disk.
I then deleted GenericUSBXHCI.kext and removed Generate P-States and Generate C-States from org.chameleon.Boot.plist file (see attached Chameleon Wizard print screen).
You don't need a bootable backup. You also should be able to get it running this way by booting with the UNIBEAST USB drive. Open a terminal and do it manually in a shell by using vi to open org.chameleon.Boot.plist and removing the USB kext file in the shell with rm.
Hope that helps you too. Good luck!
Let me know if it worked out for you.
iwok