This is a script file for those who are getting compile errors due to a missing function (RefreshMainMenuAfterContentLoaded).
This is a script file (r4guimanager.ws) from The Witcher 3 GOTY Edition (GOG version). It seems some versions are missing RefreshMainMenuAfterContentLoaded().
Extract the folder in the zip archive to the mods directory.
Error [modw3r_mainmenu]game\gui\main_menu\ingamemenu.ws(288): Could not find function 'RefreshMainMenuAfterContentLoaded'
Did you applyt this download? I'm downloading the mod and this fix . If any problems arise i will try to fix it nad will PM you with a fix.