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Now it should work for you (You may have to log out and in again for it to work) (This was used to fix JLG on )
(If you cannot upload with Backend 30 I think it was 30 + 1.0.14 plugin, and you see the error message from this issue https://basecamp.com/2748089/projects/14380370/messages/75204372#comment_595285825 which was fixed in 1.0.12 - then updating to 2.0.0 in the backend - the frontend has nothing to do with this - is the only ay)
You cannot see any thumbnails + you cannot upload
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