Something entirely rational, logical and expected is happening. Be of good cheer; we just need to figure out what it is. Next time it breaks, zip it up and post it here so I can see the whole of the problem.
I
strongly suggest you stop pasting great swathes of WALTER you didn't write. Start with a blank text file called rtconfig.txt. Using
THAT will give you the old v3 strip, that's REAPER's fallback when there's no WALTER in your file - the stuff listed in appendix 3. Now write
one line...
Code:
set mcp.solo [0 0 100 100]
It'll look crap. Which is a good thing for now. Then get funky with it...
Code:
set mcp.solo ?recarm [0 0 50 50] [0 0 100 100]
and just start adding stuff and making it more complicated and then maybe add some of the non-WALTER at the top of the file, and before you know it you'll see that most themes are just big long lists of the same old stuff its just taken you a short while to understand.
Experience has taught me that starting by trying to understand someone else's code will, for most people, test their patience beyond the point where they can be bothered any more.