Why when installing XE 2015 integration with VS 2012 does it remove XE2013 integration with VS 2010 ?

[Andrew_Smith]

I had de-selected VS 2010 integration but I knew it was going to go wrong when the installer asked me to close VS 2010. This was with update 1.

Afterwards I re-installed XE 2013 integrations with VS 2010 and luckily all is well again.

Why are there crossover effects in the VS integrations ?

[Andrew_Smith]

Not all well, far from it. VS 2010 now lists XE 2015 and no longer lists several older versions. I guess I have to re-install all of the older compilers each time I "upgrade".

My VS 2008 is also messed up and all the Fortran needs re-installing even though XE 2015 was not supposed to touch this.

[Steven_L_Intel1]

See How can I use multiple versions of the compiler in Microsoft Visual Studio*?