I purchased the Cleared for Takeoff software Series. This consisted of 20 disks with lessons for flight school on each disk. I was able to use disk 1 to 6 but after lesson 6 the software kept telling me I had to be registered to use the software. I registered using my included registration code, also went to my flight school who confirmed I was registered in the system. I contacted King Schools directly and received a very unprofessional customer service experience. They Basically told me that it was not their job to aid customers and that I... read full review »