I ran into this too when I returned from the mountain (I took a break from this game since May last year) and decided to look into it since I decomped the latest version:Yes, editting your stats did tend to break something in the script and set your HP to 0. First it was too high main stats and then it was too high max HP etc. Now I didn't encounter that anymore.
-SNIP-
Code:
if Zalt.str +Zalt.agi +Zalt.int +Zalt.cha +Zalt.end >= 100:
$ Zalt.hp -= Zalt.maxhp
if Zalt.ATK >= 700 or Zalt.maxhp >= 900 or Zalt.maxmp >= 900:
$ Zalt.hp -= Zalt.maxhp
For a porn game the author seems to care a fair amount for the security/integrity of playthroughs or something, from this check to (usually) only distributing the compiled versions of the scripts.