I think that the landscape FSDT are not responsible for the problem but that the anti system hacking is complex and that it is sensitive to the other add on
Fact is, you are having a problem with the MSVCR80.DLL, which is part of VC++ 2005 runtimes, which are used by countless of software, even outside the Flight sim world so, being dependent on those libraries is not an indication of being "complex" and, of course, doesn't have *anything* to do with anti-piracy, since these are plain and simple C++ basic libraries that don't have any relationship with anti-piracy.
Thus there should be incompatibility with the others software and alone product FSDT stop
As I've said, a problem with such libraries might have been caused by any other software, not just flightsim-related. The main issue is, the Windows Side-by-Side mechanism, which is used by FSX itself AND by the VC++ libraries since VC++ 2005 and ALL subsequent versions, IS VERY FRAGILE, and easy to mess with AND COMPLEX. THIS is what is complex, NOT the Addon Manager, which is *forced* to use this system since, as with any other FSX module, needs to call into Simconnect, which is also using it.
See this post by Pete Dowson on Avsim:
http://forum.avsim.net/topic/323009-simconnect-gone-mad/page__p__1909995#entry1909995He's saying exactly the same thing: when something goes wrong related to WinSxS, it's almost impossible to fix it without reinstalling the whole OS. And the VC++ runtimes are of course SxS, like almost all Windows system libraries. This was a system created to fix the infamous "Dll hell", but it created an even worse one.
Again on Avsim, a thread about MSVCR80.DLL crashing, maybe related to FSUIPC, but not entirely clear:
http://forum.simflight.com/topic/55841-fsx-crashes-to-desktop-ctd/Another thread here, same MSVCR80.DLL error, fixed by reinstalling FSX:
http://flyawaysimulation.com/postt29372.htmlAnd, another thread of the same error for an entirely different game:
http://forums.gaspowered.com/viewtopic.php?f=10&t=33349As you can see, the MSVCR80.DLL error doesn't affect our products only, and doesn't affect FSX only either.