That's a pity indeed. Not too long ago I re-purchased the MAAM B-25 as my copy was not longer working.
I have been thinking about re-purchasing the DC3 as well as I expect the same issues which I had with Briefing Time. For me Manfred Jahn's C47 is a nice alternative, although that is of course a new great model, but with default DC3 engine behind it....
Cheers,
Huub