Superadmin/user cannot update File Permissions

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I updated my cilent's website from 5.5.2.1 to 5.6.3.2 and now I cannot edit the Files. When I went to Settings > File Manager Permissions and click on View Files a blank popup shows up (see attached screenshot). I also cannot get the System pages to load in the Sitemap. I noticed that my Recent page history under the Dashboard is only displaying the current page. I think C5 is booting me and logging me back in each time I go to a new page. It's really frustrating. Anyone know how to fix this?

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sketchyTK
 
Steevb replied on at Permalink Reply
Steevb
Did u jump straight to 5.6.3.2?

Have u backed up db?

You should try upping in stages.

5.5.2.1 (start point)
5.6.0
5.6.2.1
5.6.3
5.6.3.1
5.6.3.2