diff --git a/.gitignore b/.gitignore
index 4f18d42..d56c4f8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ package-lock.json
 .DS_Store
 _SpecRunner.html
 .grunt/
+.idea/
diff --git a/dist/rxp-js.js b/dist/rxp-js.js
index 6b7b1ef..c781644 100644
--- a/dist/rxp-js.js
+++ b/dist/rxp-js.js
@@ -1,10 +1,12 @@
-/*! rxp-js - v1.5.0 - 2021-07-27
+/*! rxp-js - v1.5.1 - 2021-09-27
  * The official Realex Payments JS Library
  * https://github.com/realexpayments/rxp-js
  * Licensed MIT
  */
 Element.prototype.remove = function() {
-    this.parentElement.removeChild(this);
+	if (this.parentElement) {
+		this.parentElement.removeChild(this);
+	}
 };
 NodeList.prototype.remove = HTMLCollection.prototype.remove = function() {
     for(var i = this.length - 1; i >= 0; i--) {
diff --git a/dist/rxp-js.min.js b/dist/rxp-js.min.js
index 56ad758..09ca3ba 100644
--- a/dist/rxp-js.min.js
+++ b/dist/rxp-js.min.js
@@ -1,7 +1,7 @@
-/*! rxp-js - v1.5.0 - 2021-07-27
+/*! rxp-js - v1.5.1 - 2021-09-27
  * The official Realex Payments JS Library
  * https://github.com/realexpayments/rxp-js
  * Licensed MIT
  */
 
-Element.prototype.remove=function(){this.parentElement.removeChild(this)},NodeList.prototype.remove=HTMLCollection.prototype.remove=function(){for(var e=this.length-1;e>=0;e--)this[e]&&this[e].parentElement&&this[e].parentElement.removeChild(this[e])};var RealexHpp=function(){"use strict";var e,t,n="https://pay.realexpayments.com/pay",A=A||Math.random().toString(16).substr(2,8),i=360,o=/Windows Phone|IEMobile/.test(navigator.userAgent),r=/Android|iPad|iPhone|iPod/.test(navigator.userAgent),a=function(){return(window.innerWidth>0?window.innerWidth:screen.width)<=i||(window.innerHeight>0?window.innerHeight:screen.Height)<=i},d=o,s=function(){return!o&&(r||a())},c={evtMsg:[],addEvtMsgListener:function(e){this.evtMsg.push({fct:e,opt:!1}),window.addEventListener?window.addEventListener("message",e,!1):window.attachEvent("message",e)},removeOldEvtMsgListener:function(){if(this.evtMsg.length>0){var e=this.evtMsg.pop();window.addEventListener?window.removeEventListener("message",e.fct,e.opt):window.detachEvent("message",e.fct)}},base64:{encode:function(e){var t="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";e=escape(e);var n,A,i,o,r,a="",d="",s="",c=0;do{i=(n=e.charCodeAt(c++))>>2,o=(3&n)<<4|(A=e.charCodeAt(c++))>>4,r=(15&A)<<2|(d=e.charCodeAt(c++))>>6,s=63&d,isNaN(A)?r=s=64:isNaN(d)&&(s=64),a=a+t.charAt(i)+t.charAt(o)+t.charAt(r)+t.charAt(s),n=A=d="",i=o=r=s=""}while(c<e.length);return a},decode:function(e){if(void 0===e)return e;var t,n,A,i,o="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",r="",a="",d="",s=0;if(/[^A-Za-z0-9\+\/\=]/g.exec(e))throw new Error("There were invalid base64 characters in the input text.\nValid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\nExpect errors in decoding.");e=e.replace(/[^A-Za-z0-9\+\/\=]/g,"");do{t=o.indexOf(e.charAt(s++))<<2|(A=o.indexOf(e.charAt(s++)))>>4,n=(15&A)<<4|(i=o.indexOf(e.charAt(s++)))>>2,a=(3&i)<<6|(d=o.indexOf(e.charAt(s++))),r+=String.fromCharCode(t),64!==i&&(r+=String.fromCharCode(n)),64!==d&&(r+=String.fromCharCode(a)),t=n=a="",A=i=d=""}while(s<e.length);return unescape(r)}},decodeAnswer:function(e){var t;try{t=JSON.parse(e)}catch(n){t={error:!0,message:e}}try{for(var n in t)t[n]&&(t[n]=c.base64.decode(t[n]))}catch(e){}return t},createFormHiddenInput:function(e,t){var n=document.createElement("input");return n.setAttribute("type","hidden"),n.setAttribute("name",e),n.setAttribute("value",t),n},checkDevicesOrientation:function(){return 90===window.orientation||-90===window.orientation},createOverlay:function(){var e=document.createElement("div");return e.setAttribute("id","rxp-overlay-"+A),e.style.position="fixed",e.style.width="100%",e.style.height="100%",e.style.top="0",e.style.left="0",e.style.transition="all 0.3s ease-in-out",e.style.zIndex="100",d&&(e.style.position="absolute !important",e.style.WebkitOverflowScrolling="touch",e.style.overflowX="hidden",e.style.overflowY="scroll"),document.body.appendChild(e),setTimeout(function(){e.style.background="rgba(0, 0, 0, 0.7)"},1),e},closeModal:function(e,t,n,A){e&&e.parentNode&&e.parentNode.removeChild(e),t&&t.parentNode&&t.parentNode.removeChild(t),n&&n.parentNode&&n.parentNode.removeChild(n),A&&(A.className="",setTimeout(function(){A.parentNode&&A.parentNode.removeChild(A)},300))},createCloseButton:function(e){if(null===document.getElementById("rxp-frame-close-"+A)){var t=document.createElement("img");return t.setAttribute("id","rxp-frame-close-"+A),t.setAttribute("src","data:image/gif;base64,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"),t.setAttribute("style","transition: 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i.style.top="40px",i.style.left="50%",i.style.marginLeft="-180px";i.onload=function(){i.style.opacity="1",i.style.transform="scale(1)",i.style.backgroundColor="#ffffff",n&&n.parentNode&&n.parentNode.removeChild(n),A=m.createCloseButton(),e&&A&&(e.appendChild(A),A.addEventListener("click",function(){m.closeModal(A,i,n,e)},!0))};var r=m.createForm(document,t);return i.contentWindow.document.body?i.contentWindow.document.body.appendChild(r):i.contentWindow.document.appendChild(r),r.submit(),{spinner:n,iFrame:i,closeButton:A}},openWindow:function(e){var t=window.open();if(!t)return null;var n=t.document,A=n.createElement("meta"),i=n.createAttribute("name");i.value="viewport",A.setAttributeNode(i);var o=n.createAttribute("content");o.value="width=device-width",A.setAttributeNode(o),n.head.appendChild(A);var r=m.createForm(n,e);return n.body.appendChild(r),r.submit(),t},getUrlParser:function(e){var t=document.createElement("a");return t.href=e,t},getHostnameFromUrl:function(e){return m.getUrlParser(e).hostname},isMessageFromHpp:function(e,t){return m.getHostnameFromUrl(e)===m.getHostnameFromUrl(t)},receiveMessage:function(t){var e;if(m.isMessageFromHpp(t.event.origin,g))if(t.event.data&&(e=m.decodeAnswer(t.event.data)).iframe){if(!u()){var n,A=e.iframe.width,i=e.iframe.height,o=!1;if(n=t.embedded?t.instance.getIframe():document.getElementById("rxp-frame-"+h),t.instance.events&&t.instance.events.onResize&&t.instance.events.onResize(e.iframe),"390px"===A&&"440px"===i&&(n.setAttribute("width",A),n.setAttribute("height",i),o=!0),n.style.backgroundColor="#ffffff",I){if(n.style.marginLeft="0px",n.style.WebkitOverflowScrolling="touch",n.style.overflowX="scroll",n.style.overflowY="scroll",!t.embedded){var r=document.getElementById("rxp-overlay-"+h);r.style.overflowX="scroll",r.style.overflowY="scroll"}}else!t.embedded&&o&&(n.style.marginLeft=parseInt(A.replace("px",""),10)/2*-1+"px");!t.embedded&&o&&setTimeout(function(){document.getElementById("rxp-frame-close-"+h).style.marginLeft=parseInt(A.replace("px",""),10)/2-7+"px"},200)}}else{var a=function(){u()&&l?l.close():t.instance.close();var e=document.getElementById("rxp-overlay-"+h);e&&e.remove()},d=t.event.data;if("function"==typeof t.url){var s=m.decodeAnswer(d);return void t.url(s,a)}a();var c=document.createElement("form");c.setAttribute("method","POST"),c.setAttribute("action",t.url),c.appendChild(m.createFormHiddenInput("hppResponse",d)),document.body.appendChild(c),c.submit()}}},r={getInstance:function(e){var t,n;return A||(m.checkDevicesOrientation(),I&&window.addEventListener&&window.addEventListener("orientationchange",function(){m.checkDevicesOrientation()},!1),A={lightbox:function(){if(u())l=m.openWindow(n);else{t=m.createOverlay();var e=m.createIFrame(t,n);e.spinner,e.iFrame,e.closeButton}},close:function(){m.closeModal()},setToken:function(e){n=e}}),A.setToken(e),A},init:function(e,t,n){var A=r.getInstance(n);"autoload"===e?A.lightbox():document.getElementById(e).addEventListener?document.getElementById(e).addEventListener("click",A.lightbox,!0):document.getElementById(e).attachEvent("onclick",A.lightbox),m.removeOldEvtMsgListener();var i=function(e){return m.receiveMessage({event:e,instance:A,url:t,embedded:!1})};m.evtMsg.push({fct:i,opt:!1}),m.addEvtMsgListener(i)}},a={getInstance:function(e){var t,n;return i||(i={embedded:function(){var e=m.createForm(document,n);t&&(t.contentWindow.document.body?t.contentWindow.document.body.appendChild(e):t.contentWindow.document.appendChild(e),e.submit(),t.style.display="inherit")},close:function(){t.style.display="none"},setToken:function(e){n=e},setIframe:function(e){t=document.getElementById(e)},getIframe:function(){return t}}),i.setToken(e),i},init:function(e,t,n,A,i){var o=a.getInstance(A);o.events=i,o.setIframe(t),"autoload"===e?o.embedded():document.getElementById(e).addEventListener?document.getElementById(e).addEventListener("click",o.embedded,!0):document.getElementById(e).attachEvent("onclick",o.embedded),m.removeOldEvtMsgListener();var r=function(e){return m.receiveMessage({event:e,instance:o,url:n,embedded:!0})};m.evtMsg.push({fct:r,opt:!1}),m.addEvtMsgListener(r)}},s={getInstance:function(e){var t;return n||(m.checkDevicesOrientation(),I&&window.addEventListener&&window.addEventListener("orientationchange",function(){m.checkDevicesOrientation()},!1),n={redirect:function(){var e=m.createForm(document,t,!0);document.body.append(e),e.submit()},setToken:function(e){t=e}}),n.setToken(e),n},init:function(e,t,n){var A=s.getInstance(n);d=t,document.getElementById(e).addEventListener?document.getElementById(e).addEventListener("click",A.redirect,!0):document.getElementById(e).attachEvent("onclick",A.redirect),m.removeOldEvtMsgListener();var i=function(e){return m.receiveMessage({event:e,instance:A,url:t,embedded:!1})};m.evtMsg.push({fct:i,opt:!1}),m.addEvtMsgListener(i)}};return{init:r.init,lightbox:{init:r.init},embedded:{init:a.init},redirect:{init:s.init},setHppUrl:function(e){g=e},setMobileXSLowerBound:function(e){t=e},_internal:m}}(),RealexRemote=function(){"use strict";var r=function(e){if(!/^\d{4}$/.test(e))return!1;var t=parseInt(e.substring(0,2),10);parseInt(e.substring(2,4),10);return!(t<1||12<t)};return{validateCardNumber:function(e){if(!/^\d{12,19}$/.test(e))return!1;for(var t=0,n=0,A=0,i=!1,o=e.length-1;0<=o;o--)n=parseInt(e.substring(o,o+1),10),i?9<(A=2*n)&&(A-=9):A=n,t+=A,i=!i;return 0==t%10},validateCardHolderName:function(e){return!!e&&!!e.trim()&&!!/^[\u0020-\u007E\u00A0-\u00FF]{1,100}$/.test(e)},validateCvn:function(e){return!!/^\d{3}$/.test(e)},validateAmexCvn:function(e){return!!/^\d{4}$/.test(e)},validateExpiryDateFormat:r,validateExpiryDateNotInPast:function(e){if(!r(e))return!1;var t=parseInt(e.substring(0,2),10),n=parseInt(e.substring(2,4),10),A=new Date,i=A.getMonth()+1,o=A.getFullYear();return!(n<o%100||n===o%100&&t<i)}}}();
\ No newline at end of file
diff --git a/lib/rxp-hpp.js b/lib/rxp-hpp.js
index 192ff75..e98eeeb 100644
--- a/lib/rxp-hpp.js
+++ b/lib/rxp-hpp.js
@@ -1,6 +1,8 @@
 /*jslint browser:true */
 Element.prototype.remove = function() {
-    this.parentElement.removeChild(this);
+	if (this.parentElement) {
+		this.parentElement.removeChild(this);
+	}
 };
 NodeList.prototype.remove = HTMLCollection.prototype.remove = function() {
     for(var i = this.length - 1; i >= 0; i--) {
diff --git a/package.json b/package.json
index a2c444d..8688059 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "rxp-js",
   "description": "The official Realex Payments JS Library",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "homepage": "https://github.com/realexpayments/rxp-js",
   "author": {
     "name": "Realex Developer",