The problem is, providing me with such broken tapes is not likely to help, as they only contain the "wrong moves" (stored in the tape), but not the "right moves" used while solving the level.
What might help could be the following: I am currently looking for scenarios that can be used to more or less reliably reproduce this problem. That is: How could an easy test level look like, and how could a simple way of solving it look like that likely result in a broken tape?
If a problem can be reproduced, it can be solved in most cases. Unfortunately, this problem seems to be hard to be reproduced in a repeatable way.
If any such (hopefully short and simple) "strategy", used on a (hopefully small and simple) test level would be known, I could add lots of debugging output to R'n'D to see what happens when playing (including quick loading and quick saving) and when re-playing the resulting (broken) tape.
If anybody should have any clue here, that would be more than helpful!
Until then, I am trying again to find a simple level and a way to play it, which might result in broken tapes as often as possible...