Did you tried to rename those 2 folders (2.10 and 2.0 by something like "2.10.bak"), then start your preferred GIMP first, GIMP will recreate them (if problem persist remove the newly 2.10 and 2.0 created with GIMP and name back your 2 folders
(I don't know where on windows they are, but here on Linux I underlined them with blue
(I don't know where on windows they are, but here on Linux I underlined them with blue