Troubleshooting : System Architect XT error messages and problems : Restricting the multiple popup windows in System Architect XT
  
Restricting the multiple popup windows in System Architect XT
Possible cause: The page file tag named newpage is set to Yes
Look for the section you are working in the commercial.xml file that is located in the installation directory:
C:\Program Files\UNICOM Systems\System Architect Suite\SAXT\pagefiles
Find the tag that specifies newpage = Y, and then replace Y with N to prevent multiple popup windows.
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System Architect XT error messages and problems