Hello,
I am experiencing similar issue when viewing pages in Kentico after upgrading from 9 to 10. The error I am getting is here:
Uncaught ReferenceError: CommonToolkitScripts is not defined
at CMSExtendedControls.DragAndDropBehavior.set_onBeforeDrop (GetResource.ashx:1)
at Function.H.w._setProperties (ScriptResource.axd:2)
at H.w.create (ScriptResource.axd:2)
at Array.<anonymous> (Home.aspx:3450)
at ScriptResource.axd:2
at Function.H.w.raiseEvent (ScriptResource.axd:2)
at H.b._Application._raiseInit (ScriptResource.axd:2)
at H.b._Application._doInitialize (ScriptResource.axd:2)
at ScriptResource.axd:2
at ScriptResource.axd:2
Additionally, just ahead of this issue I see 4 404 errors for the following request:
https://blackhillsfcu.local.zagclients.net/CMSTemplates/BlackHillsFCU/Home.aspx?_TSM_HiddenField_=ctl00_manScript_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d4.1.60919.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-US%3aee051b62-9cd6-49a5-87bb-93c07bc43d63%3aa43b07eb