I cant tell you where it came from, US or EU.
But also remember that V3.228 is Not in the X10USA Repository too.
The way that I came across installing V3.271 and I think Dumpster too, was by doing a full reinstall of AHP. His AHP got corrupt and mine was needing to reinstall XP on a reformatted new HD.
The file came form the same place I always use when doing a whole Reinstall of AHP. The software shortcut link sent by X10 when you purchase AHP.
During the first install of AHP, a screen came up before the install started and asked if I would to like to upgrade the AHP to a new version. It did not give any information about which Version it was upgrading you to, but the screen at this option, I never have seen before while doing old reinstall of AHP in the past, in fact the last time was around Easter time and that was at my business system.
This was a whole new install and for me any X10 files on my system was non existant at the time I Installed AHP. As stated, I did revert back to V3.228 just to be safe. But do intend to try and install V3.271 again. Dang, my VA12A worked on this version, cant let that get away without trying it again.