I can Submit a from created from Adobe Acrobat Pro DC but cannot submit it when using Adobe Reader XI

Nothing happens when this click the Submit Button. No errors or anything. It just fails to open the email window.

var Dropdown1 = this.getField("Dropdown1").value;

console.println("Dropdown1:="+Dropdown1);

var email = "";

    var subject = "";

    var CC = "";

    var body = "Please see attached for SRI.";

if (Dropdown1 == "North - Constructive")

{

    email = "Specific Email Addresses";

    subject = "Constructive SRI";

    CC = "Specific Email Addresses";

}

else if (Dropdown1 == "South - Electrical")

{

    email = "Specific Email Addresses";

    subject = "Electrical SRI";

    CC = "Specific Email Addresses";

}

else

{

     email = "Specific Email Addresses";

}

if (email != "")

{

this.submitForm({

            cURL: "mailto:" + email + "?CC=" + CC + "&body=" + body + "&subject=" + subject,

            cSubmitAs: "PDF"  

    });

}