I'm trying to create a new master page by clicking on the 'Blank Master Page' button within Sharepoint Designer 2010. I have appropriate permissions. I am getting a dialog - 'SErver error: The file http://www.mydomain.com/_catalogs/masterpage/Untitled_1.master
is checked out for editing by i:0#.w|domain\username.' (where domain\username are legitimate values) and I cannot proceed.
I have checked and that user has no such file checked out, and in fact, we can find no such file.
Any ideas how to proceed?
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