Error in adding preview actions to an aggregation in an Open Graph application

I am following the tutorial creating my first Open Graph application. Everything works up until when I tried to add "Preview Actions" in an aggregation and created sample data for the authentication dialog. When I tried to save the data that I entered, I got the error (see also below)

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How do I fix this issue?

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Start time: 2011-10-07 10:34:02
End time : 2011-10-07 10:34:02
Place : 147330072002695
Tags: 833427
Image: an URL of an image
Reference : an URL of an image

http://developers.facebook.com/docs/beta/opengraph/tutorial/#define

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So I was getting the same error and then tried a few things different.

First, I created a Preview Object before creating a Preview Action. I added the image and title to the object and that created just fine.

Then, try creating a Preview Action - however; when you click on the 'Recipe' parameter - a list of created preview objects should appear. Select the one you just created. Leave all other parameters blank and that should successfully create a Preview Action.

The above worked for me to create a auth dialog with the aggregation preview.

Cheers.

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I don't know if it's applicable for this. But in an opengraph object I had to use an absolute url to an image, including protocol, otherwise I got a similar exception.