Excited as I was, I activated my Gamersgate key as soon as I saw it in Steam, then started the GG download of the files, since they weren't available in Steam itself yet. After that was done, i tried to install the game with the source files, however it won't let me, since it says the key is already registered for this account and stops right there, instead of copying the files over.

Any solution on how I can copy the files manually? Doesn't seem to be Steam files, but some other format.

Edit: That solution would probably also help reinstalling the game with your local files, without requiring Steam to download it.

Downloading the game from Steam does not work for you?

I cannot download it yet, since it says unreleased. Thats why I downloaded it through Gamersgate to have the files available, but now I cannot install it, because it says my key is already registered and the installation doesn't skip forward to the filecopy/extracting.

Are you in the USA?

No I am from Germany. Hello there

The installation wont let you install because you already own the game on steam. you have to download the files there.

Please restart your steam client and try to download the files there.

It still says that it is not released yet. I cannot download it.

The inability to copy the files if the Steam client already has it registered is kind of a bummer. Why can't the setup detect that it is already registered (which is already does) and then copy the files over to the Steam installation directory?

Or will it only start to copy the files through the setup once it is actually released on Steam?

We are evaluating this issue. Please stay tuned. Sorry for your inconvenience.

An information update from my side, I can see that JA:BIA is now available for Steam download.
I restarted the setup and now the files are being copied correctly it seems.
So the setup will not copy the files over if the game is not released yet.

I used: %Steamdir%\steam.exe -install "%GamersgateTempFilesDirForJABIA%"
(Steam needs to be closed before you try this)

Replace the directories as needed and it worked. It will start the same installation that would come from the Gamersgate setup itself.

Gamersgate and all other Non-Steam download portals should also be released now.