I'm having an issue with Views 3.7 not displaying all fields in the 'add field' dialog when trying to add a field to a view. There is only a small number of fields available from nodes etc whilst on my development version (which is almost identical) there are loads of fields to choose.
I have tried to copy my development version database to use on the staging version and use that but I get the same problem. Flushed caches etc.
Another related problem is when you try to add a custom header to your view, there are no selections to choose from. Click on close, and you get a page full of JSON. I am unsure where to go on from here. Anyone had a similar issue in the past? Thanks.