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The_Mafia, there's not much point in patching HD.
I'm currently a bit busy developing new features for HD 5.0 and other things.
Perhaps after the release, or maybe right before the release of 5.0,
I'll work on the WoG/Era module for HD and remove all the unnecessary stuff from it (which has been dragging along since the time when the code for SoD/HoTA/WoG Era was one).
It's quite likely that the problem will disappear, and if not, we'll figure it out anyway.