Problems viewing Invoices

We are testing out the Invoicer module and have run into some issues.  One of our Executives (who also has Site Admin role) created three invoices and assigned them to specific users, including one to me.  I (with Site Admin) can see them in the Content (Admin Menu = Content Management->Content) screen and they look normal.   However, the assignees cannot see the Invoices in their Invoices tab in My Account, nor can Executives or Site Admins see them on the Manage->Invoices page (the list is blank).  I did receive a notification email about the one assigned to me, but do not see a reminder on my Dashboard.
I checked the permissions for Invoicer and Site Admin has all permissions, while Executive has Create, Update, View All & View Reports.
Has anyone else seen this?  What am I missing?
Jeff Aldrich
Great Northern Union Chorus