To anyone having an issue with changing a user from the admin panel wiping credits:
http://www.*******.com/threads/users-credit-is-set-to-0-when-changing-groups.99/
To sum it up, if your admin panel's "Edit User" form does not have a field for Credits and Credit Id you can either comment out...
I do not see a products management link on my admin panel, and when I click on the User Purchase link it tells me I do not have permission. What am I doing wrong? I have both the shop and the shop_purchase permissions.