Can’t find variable: uip_ajax

I get the following failure on all my pages in admin. Seems like the pages are not loading correctly via ajax. Sometimes the ajax stucks and I have to reopen the browser.

[Error] ReferenceError: Can't find variable: uip_ajax

	getRequiredVars (uip.min.js:1:789)
	uip (uip.min.js:1:95)
	Modulcode (loader.min.js:1)