Yes thanks. I had missed that one even after trying to search for it in the file. Solved now.
It has something to do with server permissions I guess. WP can’t save the custom styles to the files in the folder I mentioned. I’ll get back to you if the host is not able to help. The image upload does not work either so that indicates there is a permission problem
And how do I display added custom field at the portfolio page?
Or would it be somehow possible to display the content of the custom field next to the page title (on the same row as the breadcrumb)?