I've just created a new custom list on my site, with a simple list, one text column, no javascript, no CEWP, just a very basic vanilla function.

Running the page with PF12 open, the error "Unable to get property 'PageManager' of undefined or null reference" comes up.

Is this normal? What is causing this? Any fix?

  • did you check in different browsers? – Ali Feb 2 '16 at 0:43
  • I only have access to the one Browser IE 11, but I did try the different compatibility options within PF12, and all came up with the same issue – southskies Feb 2 '16 at 2:09
  • Just as a test I created a new Page on the site, and when running P12 I get the error "Unable to get property 'Resources' of undefined or null reference" – southskies Feb 2 '16 at 3:43
  • What about the list functionality? can you add items and other operations? – Ali Feb 2 '16 at 4:30
  • When I add an item I get a failure on window.document.execCommand("EnableInlineTableEditing",false,false). On save I get 'WPSCinpreview' is undefined, then Unable to get property 'MenuTitle' of undefined or null reference.. keep pressing go, then the list is displayed complete with the item saved. – southskies Feb 2 '16 at 4:54

Debugging causes these errors to throw. Do E in PF12 and select the "Never break on Exceptions" option.

Problem goes away!

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