I have a standard channel form in a template with a number of fields that work fine.
I'm using a grid field that contains one file fieldtype.
No matter what I try I get "There was a problem with one or more Grid fields". I've checked upload location permissions, posting permissions and anything else that's a common problem. Console isn't showing any errors or missing assets and template and php debugging similarly.
Any advice would be greatly appreciated!
PS. The grid and file fields are working fine from the admin interface.