Upgraded to 3.0.20 PL1 yesterday and have just noticed that clicking on an article's "edit" tab (or edit link in article section) brings up a "blank" page. These are all articles that pre-date the upgrade. The pages are there but there is no content to edit? Same thing with "History" tab - there is no history shown. Actually, the only tabs that work are "Article" and "Discussions".
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