I think that can fix the problem (haven't tried it yet, but seems logical).
The only thing missing was the dotnet installer( previously I forgot to check inside dotnet/glb folder, so sorry for that).
How can I check which build I am running? The only thing it tells is I am running v6.9. Also how to download the latest version from trac (I have never worked with trac before, only have used git and mercurial) ?