1. dotnet20 is installed along with a fresh prefix (but ie8 also) 2. the Launcher works only the first time during download and installtion. Starting it a second time gives me the error you can see in the sreenshot. 3. I'm on Gameforge's free2play version so the path you mentioned: Code: drive_c/Program Files/NCsoft/Launcher/Config/Default/Games.xml doesn't exist in this version.