I’m also facing this problem. Which folder is the “general grasshopper commpoents folder”? The one under Rhino install folder or under c:/user one? Thank you for your help.
Kangaroo 2 is included for RH6, so i had to remove all Kangaroo files from APPDATA/Roaming/Grashopper/Libraries, ale link to KangarooSolever.dll in C:\Program Files\Rhino 6\Plug-ins\Grasshopper\Components to remove this error.