cableman/ding-wiki — comment on commit 8ca42c3e8e46b7e039d50876d1808a1679056af8
File: ding_wiki.features.user_permission.inc line 9
By cableman:

I had the problem that it was the only field that no one (except user 1) had permission to view/create. So at first I did not known that there was a image field, which made the gallery function etc. seem odd.

So when creating a wiki page, I at first could not see the image field(s) before I changed the permissions. Maybe it should be set in the ding_default_permissions module ? But if its a self contained extension it should set some default permissions on the new fields it defines.