Thanks Rob. Sorry I missed that one. I tried the solutions in the attached 
thread and couldn't get anything to work, so I guess that means the 
designer is off the menu for now.

On Wednesday, July 23, 2014 4:42:04 PM UTC+2, Rob Dodson wrote:
>
> Hi Keith,
>
> There's an open issue for this on the designer repo: 
> https://github.com/Polymer/designer/issues/50. If you follow that ticket 
> you can track our progress on this.
>
>
> On Wed, Jul 23, 2014 at 7:09 AM, Keith Garrod <[email protected] 
> <javascript:>> wrote:
>
>> I have installed the designer (tried 0.3.4 & master) on my localhost. 
>> When I click the <> button to go to source mode and click again to go back 
>> to wysiwig, I get the following messages in the console and the contents of 
>> my element (if any) are lost. It even happens with an empty canvas.
>>
>> I have been playing around with metadata, and thought I may have caused 
>> the error, so I checked out a fresh copy from github - same result.
>>
>> Exception caught during observer callback: TypeError: undefined is not a 
>> function at Polymer.ensureMeta (
>> http://localhost:3000/components/x-meta/x-meta.html/x-meta.js:143:47 
>> <http://localhost:3000/components/x-meta/x-meta.html/x-meta.js>) at 
>> Polymer.loadElementImports (
>> http://localhost:3000/elements/design-host/design-host.html/[1766].js:119:22 
>> <http://localhost:3000/elements/design-host/design-host.html/%5B1766%5D.js>) 
>> at Polymer.loadHtml (
>> http://localhost:3000/elements/design-host/design-host.html/[1766].js:93:12 
>> <http://localhost:3000/elements/design-host/design-host.html/%5B1766%5D.js>) 
>> at Polymer.loadHtml (
>> http://localhost:3000/elements/design-canvas/design-canvas.html/[1157].js:512:21
>>  
>> <http://localhost:3000/elements/design-canvas/design-canvas.html/%5B1157%5D.js>)
>>  
>> at Polymer.loadHtml (
>> http://localhost:3000/elements/design-frame/design-frame.html/[1561].js:50:19
>>  
>> <http://localhost:3000/elements/design-frame/design-frame.html/%5B1561%5D.js>)
>>  
>> at Polymer.loadHtml (
>> http://localhost:3000/elements/designer-element/designer-element.html/[1645].js:312:19
>>  
>> <http://localhost:3000/elements/designer-element/designer-element.html/%5B1645%5D.js>)
>>  
>> at Polymer.codeToDesign (
>> http://localhost:3000/elements/designer-element/designer-element.html/[1645].js:210:10
>>  
>> <http://localhost:3000/elements/designer-element/designer-element.html/%5B1645%5D.js>)
>>  
>> at Polymer.selectedChanged (
>> http://localhost:3000/elements/designer-element/designer-element.html/[1645].js:155:12
>>  
>> <http://localhost:3000/elements/designer-element/designer-element.html/%5B1645%5D.js>)
>>  
>> at g.invokeMethod (
>> http://localhost:3000/components/polymer/polymer.js:12:13312 
>> <http://localhost:3000/components/polymer/polymer.js>) at 
>> g.notifyPropertyChanges (
>> http://localhost:3000/components/polymer/polymer.js:12:11598 
>> <http://localhost:3000/components/polymer/polymer.js>) 
>>  
>> Follow Polymer on Google+: plus.google.com/107187849809354688692
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>

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