TypeError and NetworkError when starting the designer tool from the url

[casertap]

Errors are:

• TypeError: PolymerGestures.addGesture is not a function
  PolymerGestures.addGesture(this.parentNode, event, this[handler].bind(this));
  CgogIFB...XIpIHsK (line 30)
• TypeError: PolymerGestures.addGesture is not a function
  PolymerGestures.addGesture(this.parentNode, event, this[handler].bind(this));
  CgogIFB...XIpIHsK (line 30)
• "NetworkError: 404 Not Found - http://www.polymer-project.org/tools/designer/components/topeka-elements/metadata.html"
  metadata.html
• "NetworkError: 404 Not Found - http://www.polymer-project.org/tools/designer/components/paper-calculator/metadata.html"

Then the inferface is showing but it is not possible to drag components from the palette to the main area.

Thanks,
Pierre

[ebidel]

Dupe of Polymer/designer#58. This should be fixed.