JavaScript-errors

[grimen]

missing } in XML expression
[Break on this error] body { background-color: #fff; color: #333; }\n
prototyp...243506548 (line 5)
missing } in XML expression
[Break on this error] body { background-color: #fff; color: #333; }\n
effects....243506548 (line 5)
missing } in XML expression
[Break on this error] body { background-color: #fff; color: #333; }\n
dragdrop...243506548 (line 5)
missing } in XML expression
[Break on this error] body { background-color: #fff; color: #333; }\n
controls...243506548 (line 5)
$ is not defined
[Break on this error] $(function() {
applicat...243506548 (line 1)
Element.observe is not a function
[Break on this error] Element.observe(window,'load', function() {
localhost:3002 (line 12)

Something is quite messed up...

[mrflip]

This is probably because you have

 set_asset_host_to_callback_url: true 

in your config/facebooker.yml yet a different relative host than the callback url.

Check that the callback_url resolves to the correct host (for the environment you're using) and if you don't need set_asset_host_to_callback_url to be set then unset it.