Are you trying to learn into the computer?

This has been a problem since at least day five of ALL Prontos and their relatives, the Marantzes.

Create graphics for the buttons you want, download to the remote, learn codes, upload and save, modify graphics, save, download the remote, learn, etc.

There was a problem at one time where pcfs would fail after several cycles of this, so it was advisable to save with different names every couple of times. I did this for a while but don't find a need for it, so that problem is probably solved.

I had a problem last week with an RC5200 (old generation) that I've seen before -- adding functions to a macro, especially moving a delay up in the macro, causes the program to crash, and you lose all your work since the last save. This just inspires me to save more often, especially when building macros and moving things around. I get all the commands from one device, then all from another, etc, then put them in order and then build in delays as needed.