[Zope] external editor and pythonwin

Hi, I have a problem with external editor and editing python scripts with pythonwin. It works fine if pythonwin is not open when I edit a script by clicking on the pencil. But if pythonwin is already open, I get the error: "external editor lost connection to editor process" The script is loaded in pythonwin, but the connection to Zope is lost. anyone have a solution ? Sune B. Woeller