Did you do a complete uninstall before you installed v1085? Or did you install over the old v1076?
And, then did you completely uninstall v1085 before installing v1076 again?
If you didn't do uninstalls before installs, it can confuse things.
It is completely doable to install two versions side by side. All you need to do is specify a different directory. I have my v1076 in C:\TGC\AGK and then I put versions v1082 thru v1085 in C:\TGC\AGK1082, C:\TGC\AGK1083, etc..
And the really cool thing is that no matter which one you open, it shows the same set of projects that were added/loaded in another version of AGK. This comes in handy when testing one version against another (remembering to rebuild in each AppGameKit, of course).
Cheers,
Ancient Lady
AGK Community Tester and AppGameKit Master