Happening to me too. The Dev version works. Go to Properties -> Game Folders to access it. The weird thing is that this bug comes and goes. Just the other day I was playing with no issue. The week before that, I was getting this bug. Now I'm getting it again.
Very weird.
Edit: I just unintalled it with Revo Uninstaller and it worked once. Now it's not working again.
Ok, this is what worked for me:
https://www.dropbox.com/s/609nkjy5j5d6z1k/Sins_remove_bin.bat
From this link:
https://esupport.stardock.com/index.php?/Knowledgebase/Article/View/447/0/general-sins-rebellion-troubleshooting
It's a .bat file that resets the license info. Not sure why it was causing problems for me. Give it a shot.
You have to download the .bat file and then run it just like you would a program. Press "R" to tell it you need to reset Rebellion and then press Enter.
Log in to their server with your account credentials and it will hopefully work.
