I can create a new field, but when I add it to SEBLOD it doesn't save. The field is still on the right hand side, but I can't add it to the left hand side. Saving puts it back on the left again. When I click on save and close SEBLOD does not close the field/content type. I just seems to save and stay on the page.
Also I have found many error 500s on your site. Here's one. http://www.seblod.com/v2/forum/Bug-Reports/36007-fields-are-not-saved-in-Admin-Form-or-any-other-views.html