Symptoms
When Secure Sockets Layer (SSL) is enabled on a SharePoint Portal Web server the Web Interface for SharePoint Portal Web Parts fail to display published resources. If SSL is removed from the SharePoint Web server, contents now appear in the Web Parts.
Cause
The problem is the Citrix Web Part will ALWAYS construct as http://server/_layouts/WISP/GetResources.aspx unless the Use https to obtain resources flag is set on the Web Part tool page. Once this option is selected, it should ALWAYS construct as https://server/_layouts/WISP/GetResources.aspx.

Resolution
More Information
Refer to CTX108349 – Web Interface for Microsoft SharePoint Administrator's Guide for additional information.