Permissions not working in Admin Interface

[Josh.MIPS]

I have recently been working on the admin interface for a django
site. There is one model under an application that will only show up
if I set a user as a super user. I can assign them privileges to
create, change and delete these objects but they do not show up and
when I point the browser to the url associated with these objects it
says permission denied. I have even tried giving them every single
permission without making them a super user and this one field still
does not show up. Then if I make them a super user it shows up. Does
anyone have any idea what is going on. Thanks in advance.
Josh

[Josh.MIPS]

I fixed my issue but I am still not sure what caused it. I rearranged
the order of the models and then when I went in to change user
permissions there were two sets of add/change/delete for the model in
question, one plural and one not (the name of the model is not
plural). The non-plural version appears to be the correct one. I am
not sure why both are showing up (there are only three models, but
with the extra plural it looks like the admin site thinks there are
four).
Josh