I thought I had duplicated the problem, but I discovered that the transceiver I was testing with is defective. When I tried a different one it worked fine. It's possible yours is defective, but I see you're using a plasma TV and its a strong possibility that the transceiver is getting extraneous IR signals from the TV that interfere with the IR learning process. I also have a plasma TV at home and I have to take care to place the transceiver somewhat behind the front of the TV to get good results. During learning, I carefully shield the transceiver from the TV and from direct sunlight to avoid problems. We used to have a plasma TV here at work, and our IR receivers would go nuts when placed in front of it. Try rebooting your computer, then try doing the learning with the TV off or with the transceiver shielded.
There's also a very slim possibility that the remote control you use for your TV uses a frequency range not supported by our IR receiver. I haven't encountered any of these but have heard they exist. To rule that out, try learning with some other remote control you have laying around.