user roles

Hello!
I am having trouble with the user roles on your calendar…
It works fine under the admin account but I have set up a different set of permissions and it doesn’t work under the new accounts.

All the other, inferior products work fine, just not this one!!

The new user has pretty much all the same privileges as the admin account without the update features (so no core/theme/plugin updates can be done from the account)

Is there a workaround available for this at all?

Thanks in advance,
Jamie

http://wordpress.org/extend/plugins/appointment-calendar/