Forum .LRN Q&A: Error while changing page layout (test server)

Hi everybody,

I created a new class on the test server and added a new page to test the page layout functionality.

While the 2 column version works for 1 or 3 columns I always get the following error:

Problem with Your Input
to Main Site
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We had a problem processing your entry:
You must supply a value for anchor
Please back up using your browser, correct it, and resubmit your entry.
Thank you.

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Can anyone tell me what goes wrong here? Where do I have to supply this value?

Greetings,
Nima