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I need your help to resolve 1 Issue in Wordpress admin page. I'm using WP 3.7.1 and twentytwelve template. I have some posts and pages. Currently, when I click Filter or Apply button in Post/Page list, it always shows the error "Invalid Post Type" and the URL looks like this .

post_type=&_wpnonce=54fb54b00f&_wp_http_referer=%2Fwp-admin%2Fedit.php&action=-1&m=0&cat=0&paged=1&mode=list&action2=-1

I tried to active another template and it works fine!

Please help me to understand and fix this issue!!! Thank you!!

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    Try disabling all plugins, reactivating the theme, and trying again. See if it works as expected. My guess is a plugin/theme conflict. – Michael Ecklund Dec 10 '13 at 17:02
  • Thank for answering, but it may not solution, I deactivate all, but not effective :( – Toan Tran Van Dec 10 '13 at 17:32

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