We have an anonymous SharePoint 2010 Publishing site with a custom master page. We are getting an error each time the clients content editors edit the page “There was an error processing the request”.
After some investigation with Fidler we found this down to an ajax/JSON call made on the page from the managed metadata control to:
/_vti_bin/TaxonomyInternalService.json/ValidateTerms
which was throwing a 500 error We have also notice that the Digest Control no longer works and shows a value “InvalidFormDigest”
<input name="__REQUESTDIGEST" id="__REQUESTDIGEST" type="hidden" value="InvalidFormDigest"/>
We believe this to be the cause of our problems. After contacting MS Support they have acknowledged that this is a known issue probably introduced by the April 2010 CU. We are waiting to find if here is a hotfix and if the June 2013 CU will fix the issue.
It was suggested that the code on the following page may force the digest to be recreated but we found this did not work for us.
Has anyone else found a fix for this issue?
