I put into the 'Bitcoin Home Dir' field the location of another Bitcoin installation on an external drive (HD).
So you have 2 copies of the chain to begin with?
It's on an external drive that can be plugged into other computers. I don't run multiple instances of Bitcoin Core at the same time.
I don't see it having anything to do with the problem I had.
Oh damn! I looked at the shortcut for my original installation of Bitcoin Core and I see that I have pointed it to yet another chain (my C: drive was getting full ).
When I point armory there everything works with that installation now as well...
Sorry for wasting your time.
