XPathEvaluator is undefined error for MS CRM 2016 online On Windows App

Sep 9 at 8:31 AM
Hi,

I using crm 2016 online and it is working without a problem on web client as well as mobile/tablet app. All code is executed correctly in IE and in Chrome. But when we try to use the crm app from Microsoft we get the error: 'xpathevaluator' is undefined for XrmServiceToolkit.Soap.Fetch() method. I am using XrmServiceToolkit v. 2.2
Can you please help ?