gamesfreak64: Maybe it's because of some some 'sloppy' programming that things dont work, as far is remember, a DLC should ask and check if the main game is installed, DLC can normally NOT be installed if main game is not detected :D
This DLC can be installed... also after uninstall all progress was NOT uninstalled ( must be floating in some users folder on the pc i guess)

Anyway, I have Guild of Dungeoneering and 2 DLC (other dev/publisher) , when it did not show up i asked the dev, he told me how to solve it, so the guild of dungeoneering dev seems to take his job serious and always tries to respond asap.

So i also asked this antihero dev at steam ( cause they love to be there at steam he;ping customers 24/7 apparently) .... but no reply

Maybe its because he is very busy , which is possible, but many other devs had time to help , it seems this one is pretty occupied elsewhere (steam).

I guess it might take a while before he notices us buyers here ... :D

Anyway, i also noticed on Steam that far to many devs simply do not answer (lazy or not interested) , there are dozens of games that have devs that never reply at steam (to busy or maybe not interested i dont know).... i created a list of those publishers/devs at steam that wont answer our questions so i can make sure i wont buy game from these publishers anymore, cause we customers have right to get support.