You cannot open Rule Set Manager in Workshop from a client computer because the Prinergy primary server is set as a proxy server.
In some cases, Workshop users cannot open Rule Set Manager. This occurs primarily on Mac client computers, but it can also occur on Windows client computers that use a proxy server.

Solution:

• For Mac client computers, perform the following steps on each client computer:
  1. Double-click System Preferences, double-click Networks, click Configure, and click the Proxies tab.
  2. In Bypass proxy settings for these Hosts & Domains, type the IP address of the Prinergy primary server, and click Apply Now.
     Do not use the server name. You must use the IP address.
  3. Restart the computer.

• For Windows client computers, go to the proxy server and add the IP address of the Prinergy primary server as an exception to the proxy list.