I just downloaded the new gog.com downloader 0.9.0.1372 and removed my old adobe air based downloader.
I tried to download a game I just bought with it, but when I click on "add to GOG.com Downloader" in "My account", it doesn't appear in the downloader (this step worked without problems in the old version). I tested this with several games, just in case it was only a problem with the game I just bought, but it always delivered the same negative result.
I restarted the downloader several times, logged in a couple of times and tried it with admin privileges (I'm on Windows 7 x64). So far nothing helped.
Has someone else experienced a similar problem? Any tips?
I did experience same problems (also on WIN 7 x64).
First solution - as already mentioned here in the thread - is try running the .exe within the winrar, 7zip (or similar) program instead of extracting it first.
Second solution: try experimenting with the Windows compatibility settings. In my case it has helped to choose Windows XP Service Pack 2 (AND don't forget: 'run as administrator') to finally get it working again.
Strange thing, until yesterday everything worked flawlessly...