diff --git a/src/tagui b/src/tagui
index 5d87fd3b..4ff2bc0a 100755
--- a/src/tagui
+++ b/src/tagui
@@ -6,7 +6,7 @@ chrome_command="google-chrome"
 
 if [ -z "$1" ]
 then
-echo "tagui v6.63: use following options and this syntax to run - ./tagui flow_filename option(s)"
+echo "tagui v6.64: use following options and this syntax to run - ./tagui flow_filename option(s)"
 echo
 echo "tagui live     launch TagUI live mode enabled with visual automation for interactive development"
 echo "tagui update   download and update to latest TagUI version (please backup your version beforehand)"
diff --git a/src/tagui.cmd b/src/tagui.cmd
index 49508e56..452c0b5c 100644
--- a/src/tagui.cmd
+++ b/src/tagui.cmd
@@ -14,7 +14,7 @@ rem enable windows for loop advanced flow control
 setlocal enableextensions enabledelayedexpansion
 
 if "%~1"=="" (
-echo tagui v6.63: use following options and this syntax to run - tagui flow_filename option^(s^)
+echo tagui v6.64: use following options and this syntax to run - tagui flow_filename option^(s^)
 echo.
 echo tagui live     launch TagUI live mode enabled with visual automation for interactive development
 echo tagui update   download and update to latest TagUI version ^(please backup your version beforehand^)
diff --git a/src/tagui_header.js b/src/tagui_header.js
index 7a154f8f..01c5591d 100644
--- a/src/tagui_header.js
+++ b/src/tagui_header.js
@@ -1353,12 +1353,12 @@ return source_code;};
 // for calling rest api url synchronously
 function call_api(rest_url) { // advance users can define api_config for advance calls
 // the api_config variable defaults to {method:'GET', header:[], body:{}}
-var xhttp = new XMLHttpRequest(); xhttp.open(api_config.method, rest_url, false);
+try {var xhttp = new XMLHttpRequest(); xhttp.open(api_config.method, rest_url, false);
 for (var item=0;item<api_config.header.length;item++) { // process headers
 if (api_config.header[item] == '') continue; // skip if header is not defined
 var header_value_pair = api_config.header[item].split(':'); // format is 'Header_name: header_value'
 xhttp.setRequestHeader(header_value_pair[0].trim(),header_value_pair[1].trim());}
-xhttp.send(JSON.stringify(api_config.body)); return xhttp.responseText;}
+xhttp.send(JSON.stringify(api_config.body)); return xhttp.responseText;} catch(e) {return '';}}
 
 // custom function to handle dropdown option
 casper.selectOptionByValue = function(selector, valueToMatch) { // solution posted in casperjs issue #1390
diff --git a/src/test/positive_test.signature b/src/test/positive_test.signature
index 5cd03143..29b1a2b1 100644
--- a/src/test/positive_test.signature
+++ b/src/test/positive_test.signature
@@ -1380,12 +1380,12 @@ return source_code;};
 // for calling rest api url synchronously
 function call_api(rest_url) { // advance users can define api_config for advance calls
 // the api_config variable defaults to {method:'GET', header:[], body:{}}
-var xhttp = new XMLHttpRequest(); xhttp.open(api_config.method, rest_url, false);
+try {var xhttp = new XMLHttpRequest(); xhttp.open(api_config.method, rest_url, false);
 for (var item=0;item<api_config.header.length;item++) { // process headers
 if (api_config.header[item] == '') continue; // skip if header is not defined
 var header_value_pair = api_config.header[item].split(':'); // format is 'Header_name: header_value'
 xhttp.setRequestHeader(header_value_pair[0].trim(),header_value_pair[1].trim());}
-xhttp.send(JSON.stringify(api_config.body)); return xhttp.responseText;}
+xhttp.send(JSON.stringify(api_config.body)); return xhttp.responseText;} catch(e) {return '';}}
 
 // custom function to handle dropdown option
 casper.selectOptionByValue = function(selector, valueToMatch) { // solution posted in casperjs issue #1390