Error when trying to edit page properties in 5.5

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I set up a new subpage and when I go in to edit the properties to exclude the page from navigation nothing happens. In the chrome java console I had the below error. I get the same error if I try and edit anything in the properties field on any of my pages after they are created. The site is apoprecords.com

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Uncaught TypeError: Object function (d){var e=typeof d==="string",f=Array.prototype.slice.call(arguments,1),h=this;d=!e&&f.length?b.extend.apply(null,[true,d].concat(f)):d;if(e&&d.charAt(0)==="_")return h;
e?this.each(function(){var g=b.data(this,a),i=g&&b.isFunction(g[d])?g[d].apply(g,f):g;if(i!==g&&i!==j){h=i;return false}}):this.each(function(){var g=b.data(this,a);g?g.option(d||{})._init():b.data(this,a,new c(d,this))});return h} has no method 'showLoader'
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dlntx9 replied on at Permalink Reply
Still getting the same error, and have no idea whats causing it. Anyone able to help?
brycereynolds replied on at Permalink Reply
I am also getting this error. Unfortunately I can't upgrade concrete5 b/c it bails on me whenever I try to.

I get this when I try to edit page properties and when I try to add a new page.

Uncaught TypeError: Object function (d){var e=typeof d==="string",f=Array.prototype.slice.call(arguments,1),h=this;d=!e&&f.length?b.extend.apply(null,[true,d].concat(f)):
d;if(e&&d.charAt(0)==="_")return h;e?this.each(function(){var g=b.data(this,a),i=g&&b.isFunction(g[d])?g[d].apply(g,f):g;if(i!==g&&i!==j){h=i;return false}}):this.each(function(){var g=b.data(this,a);g?g.option(d||{})._init():b.data(this,a,new c(d,this))});return h} has no method 'showLoader' /index.php/dashboard/sitemap/full/ (1):1
onsubmit /index.php/dashboard/sitemap/full/ (1):1
f.event.trigger jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
(anonymous function) jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
e.extend.each jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
e.fn.e.each jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
f.fn.extend.trigger jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
f.fn.(anonymous function) jquery.js,qv=33d3ec8c48dc4d70176723936acaadb0.pagespeed.jm.A_xP-993uZ.js:1
onclick /index.php/dashboard/sitemap/full/ (1):1