Yeah, it was OS 1.03
Also, it does not work on 2.55MP This isn't looking good... At least with the 1.03, the font worked before crashing, but this time the font doesn't even display as changed before crashing.
Nevermind, I forgot to send the fontset Now it is just 1.12 and below that fail.

However, it does work on these so far:
OS2.30
OS2.40
OS2.41
OS2.43
EDIT: And 1.19. I will update as I test them.
1.18 good
1.17 good
1.16 good
1.15 good
1.14 good
1.13 good
1.12 Fail
1.10 Fail
1.03 Fail
2.53 Good except mathprint (doesn't crash though)
2.55 Good except mathprint