Add better error handling when looking up machine

www/assets/js/machine.js

@@ -258,12 +258,16 @@ function machineInfoOpenAsync(routeTo, routeFrom, resolve, reject) {
             },
             function (xhr) {
                 app.dialog.close();
+                try {
                     var error = $.parseJSON(xhr.responseText);
                     if (error && typeof error.msg != 'undefined') {
                         app.dialog.alert(error.msg, "Error");
                     } else {
                         app.dialog.alert("A server or network error occurred.", "Error");
                     }
+                } catch (ex) {
+                    app.dialog.alert(xhr.responseText, "Error");
+                }
                 reject();
             });
 }