I\'m trying to build an msi project in my VS2015 solution. I had installed the VS Installer Projects Extension.
Everything was working great just a few days ago.
I had the same problem with VS 2015 asking for VS 2008 installation package.
Found this which solved my problem:
Open a cmd as admin.
Go to directory C:\Program Files (x86)\Common Files\microsoft shared\MSI Tools
run: regsvr32.exe /u mergemod.dll"
run: regsvr32.exe mergemod.dll"
Link to the hint