The option to view a user's email from the admin account gives the following error

Code:
JavaScript error encountered in method
ZaAccountListController._viewMailListenerLauncher

name: TypeError
message: 'this.document.body' is null or not an object
number: -2146823281
description: 'this.document.body' is null or not an object
This is installed on CentOS 4.2 (RHEL4).