I also have come across this problem, and in addition to it not seeming to work, it deletes any runes I have already in my inventory that I acquired normally. Though all the other options seem to work just fine and I have not had a crash once while using the trainer.
I can confirm that there was some sort of unspecified (ie; no details given) update. Trainer written for the version 1.2 patch no longer works. I hope it will be possible to make a new trainer. Thanks in advance!