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Hello, I made an upgrade from 1.5.1.1 to 1.5.6.4, then login with subadmin account >>> CATALOG >> PRODUCT >> EDIT, generating a double control panel as the image that I uploaded, I and view source code from the same page navigate to where the problem lies. further down the page opens normally and all functions work. This is ONLY IN Administrators group and users. top administrator and top groups do not have this problem. not helped add - remove users or new groups with new users refresh or other actions. tried by removing the additional modules in vqmod, no positive result has the same appearance of the second admin panel. i have a text file with source code ot page but was rejected by forum system , here is web address for downloading source code of page http://forflowershop.com/web/

This is a permissions "error". The user group that your "subadmin" user is a member of does not have access permission to the page you're trying to view. Log in as the top-level admin, go to System->Users->User Gruops and edit the sub-admin user group and check all the relevant boxes in both the "Access" and "Modify" lists for this user group.