I just tried to run Orbiter on an old Windows XP Computer that had not yet the C++ runtime installed. I first installed the release version 2010p1, installed the vcredist_x86 runtime that is found in the install folder and it worked.
Then tried to update it with the public beta diff files but any version newer than 2010p1 will refuse to run, failing with the typical meaningless error message that happens when SxS assemblies were not found or have version mismatch: "This application has failed to start because the application configuration is incorrect" and in the windows event log it said Microsoft.VC80.CRT is not installed
After trying at least 4 different versions of this installer (They all have the same name and can even be installed in parallel (DLL-Hell-2.0)) I finally found that this one: http://www.microsoft.com/en-us/downl...ng=en&id=26347
is exactly the one that orbiter was looking for, older ones will not work!
The vcredist_x86 in the install folder is too old.