NotAllowedError Security settings prevent access to this property or method

PLEASE HELP!!!!

So, I have this State form that is distributed as an XFA document (original document and my version attached).  As I understand, XFA format has always been a headache to developers.  So here's where I am, I've recreated the document using Print to Abode PDF.  Finally, I've added a button to run some javascript (pasted below).  

I've tried everything I've come across in searched articles, but repeatedly get the message - NotAllowedError: Security settings prevent access to this property or method.  I've checked the Document Security Properties and all say 'Allowed'.  Oh, almost forgot to mention, I CAN manually perform insert pages from a file going through the menu.  I'm open for any/all suggestions. 

Thanks a million in advance.

app.trustedFunction(function () {
          app.beginPriv();
          this.insertPages ({
               nPage: -1,
               cPath: "/c/temp/AdditionalMember.pdf",
               nStart: 4
          });
          app.endPriv();
     });
app.alert("Additional Member Page Added!");