This is an informative video on the CX-20 and its software options.
Ive gone through the loops of software problems and Ive found a solution.
Below is the link for the Big Shark software, Its easy and has worked on my windows 7, and windows 8 computers.
The other two versions can use droid planner and other software.
New Big Shark Software link;
http://www.bigflyshark.com/Home/Product/SharkX8#