One of the Russian gamer, AGKanevchev send me fixes for Ghoul potion bug
Heya. Russian and "AG" as in "Ardanis/GeN1e"? Well, I suppose not, but that was his modder prefix anyway.
I know nothing about this alleged "ghoul potion." Okay, fine. I invented it at Yovaneth's request. And it was actually working on vanilla BG2... perhaps even BGT, but long before we anticipated EE etc. We had some glitches (I particularly remember some portrait-related stuff), but I thought we ironed them out.
But I don't have immediate access to the EE games anymore (sad but true... they don't translate from one machine to another when you swap hard drives). So I could look at the effects, but what I seem to recall (my memory's kinda hazy on what Yovaneth wanted) was this:
Upon certain circumstances (like a time limit I think), the ghoul-turned character is supposed to explode, or something similarly nasty. And I said something like, "only a mutant half-orc would think of something like that." Okay, I didn't say that, but I swear it was an intended effect (of his, not mine), however brutal it might seem. I won't swear it was bug-free, particularly when bringing EE into play (as I said, not something we anticipated at the time).
Anyway, regarding "what might be the reason why on classic BG2 using yspotn02 doesn't restore the original character portrait?" This at least should be working as intended. If someone could come up with steps for reproduction (things to do in the game or console that would reproduce the error), that could help. It's been a long time since I last looked at this (even by orcish standards).