About old Dalan House -- I remember that I opened chest there many times >_< very suspicious chest 0__0
I'll try to collect only the chests in royal palace, maybe also the chests in confiscatory... and if that fails, the chest outside of old dalan's house).
I'm glad that all seems to be solved ^__^ Nevertheless better to check all suspicious chests there, not only those in cellars.. it will be vexing to miss remains of that bug after so many efforts 0__0
So this proves (well, it's not a real proof, but let's say it's a hunch that is next to certainty) that the royal palace is the problem. It's the only location that got its script changed, it happens that it had some chest related code in the us/uk version. Well, I changed the script because I was too lazy and didn't think it over. I could post a temporary solution right away, but I believe it would be better to change the patching method a little bit to allow some mixed mode. I'll code it now, make some tests tomorrow, and I hope the new version will be available soon.
Thanks for the help, guys.