diff --git a/build/utils.sh b/build/utils.sh
index 6e9432d..b8e2e2e 100755
--- a/build/utils.sh
+++ b/build/utils.sh
@@ -10,6 +10,13 @@ do_build() {
 		&& ninja)
 }
 
+do_quick_install() {
+	(cd "$(dirname "${DIR}")/build/src" \
+		&& sudo cp lightdm-webkit2-greeter /usr/bin \
+		&& sudo cp liblightdm-webkit2-greeter-webext.so /usr/lib/lightdm-webkit2-greeter \
+		&& sudo cp -R ../../themes/antergos /usr/share/lightdm-webkit/themes)
+}
+
 clean_build_dir() {
 	(cd "${DIR}" \
 		&& find . -type f ! -path './ci*' ! -name '.gitignore' ! -name utils.sh -delete \
@@ -49,4 +56,8 @@ case "$1" in
 	build)
 		clean_build_dir && do_build
 	;;
+
+	build-dev)
+		clean_build_dir && do_build && do_quick_install
+	;;
 esac
diff --git a/src/webkit2-extension.c b/src/webkit2-extension.c
index 9012ff4..e5a8619 100644
--- a/src/webkit2-extension.c
+++ b/src/webkit2-extension.c
@@ -1914,36 +1914,21 @@ void
 web_page_console_message_sent_cb(WebKitWebPage        *web_page,
 								 WebKitConsoleMessage *console_message,
 								 gpointer              user_data) {
-	WebKitConsoleMessageLevel msg_level;
-	WebKitConsoleMessageSource msg_source;
 	WebKitDOMDOMWindow *dom_window;
 	WebKitDOMDocument *dom_document;
 	const gchar *msg_text;
-	gboolean is_error, is_from_javascript, is_exception;
-
-	msg_level = webkit_console_message_get_level(console_message);
-	is_error = WEBKIT_CONSOLE_MESSAGE_LEVEL_ERROR == msg_level;
-
-	if (! is_error) {
-		return;
-	}
-
-	msg_source = webkit_console_message_get_source(console_message);
-	is_from_javascript = WEBKIT_CONSOLE_MESSAGE_SOURCE_JAVASCRIPT == msg_source;
-
-	if (! is_from_javascript) {
-		return;
-	}
+	gboolean is_error;
 
 	msg_text = webkit_console_message_get_text(console_message);
-	is_exception =
+	is_error =
 		NULL != strstr(msg_text, "Uncaught") ||
 		NULL != strstr(msg_text, "Error") ||
 		NULL != strstr(msg_text, "error") ||
 		NULL != strstr(msg_text, "Exception") ||
-		NULL != strstr(msg_text, "exception");
+		NULL != strstr(msg_text, "exception") ||
+		NULL != strstr(msg_text, "ERROR");
 
-	if (! is_exception) {
+	if (! is_error) {
 		return;
 	}
 
diff --git a/themes/antergos/js/greeter.js b/themes/antergos/js/greeter.js
index 12a7b05..a529f70 100644
--- a/themes/antergos/js/greeter.js
+++ b/themes/antergos/js/greeter.js
@@ -896,7 +896,7 @@ class AntergosTheme {
 /**
  * Initialize the theme once the window has loaded.
  */
-$( window ).load( () => {
+$( window ).on('load', () => {
 	new AntergosThemeUtils();
 	new AntergosTheme();
 } );