Users noticed yesterday that webparts were missing on the default home page. Clicking edit generates the following message:

Sys.InvalidOperationException: Could not find updatedPanel with ID 'ctl00_panelzone'. If it is being updated dynamically then it must be inside another UpdatePanel.

Rebooted app/web server and attempted restore using SPD but issue remains.

How can I fix error message?


I found that there was something wrong with one of the posts in a web part. I deleted the title/description, added information back to the post and saved it. Something with the font or being bold.....

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