There's an invisible iframe created when a channel is opened. Maybe you need to delete that page element before creating a new channel?
<iframe name="wcs-iframe" id="wcs-iframe" style="height: 100%; width: 100%; " src="http://talkgadget.google.com/talkgadget/ Sounds like a hack, but might work. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
