When I try (on 4.6.18) to create a new Case, I get an error saying Case Type and Case Start Date are required, but no fields exist on the form to specify these?
I have Case Types defined and enabled at civicrm/a/#/caseType and I've tried adding a case from the menu Cases » New Case and from the Cases tab.
There's no javascript errors showing, nothing in Drupal's watchdog log. Hmmm. Am I doing something daft?
This was due to permissions in the templates_c folder. Some entries in there were not deletable by the user that Apache was running as. I discovered this by attempting to clear caches at civicrm/admin/setting/updateConfigBackend?reset=1 which generated lots of errors.
Removing these files/or correcting their permissions and clearing the cache fixed it.
I do not recognize this problem, but I am assuming you have an extension active on the form too? If so, sure that does not muck things up?
