Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Technical Issues Editor crashes when loading any module

I bought this game mostly for the editor, and the editor just crashes.

I bought the GoG version, paths are set up correctly.

Error in the log file:

'[26-10-2014 05:46:07:321][..\..\..\EyesOfAChild\Code\EoC\App.cpp 990 App::LoadLanguage]: Missing language.lsx file in 'C:/GOG Games/Data/Localization/language.lsx'
[26-10-2014 05:46:07:670][..\..\..\..\..\..\LSFramework\Code\SteamBinding\SteamAPIManager.cpp 82 stm::SteamAPIManager::Init]: Steam must be running to play this game (SteamAPI_Init() failed).
[26-10-2014 05:46:07:671][..\..\..\EyesOfAChild\Code\EoC\App.cpp 865 App::InitCommunity]: Failed to initialize steam community"

Why is the GoG version asking for steam?

Also, it references a missing file in 'C:/GOG Games/Data/Localization/language.lsx'

But the install path is 'C:/GOG Games/Diviniy - Original Sin//Data/Localization/language.lsx'