diff --git a/src/script/data/libraries/emmet/lib.js b/src/script/data/libraries/emmet/lib.js
--- a/src/script/data/libraries/emmet/lib.js
+++ b/src/script/data/libraries/emmet/lib.js
@@ -5431,8 +5431,8 @@
 		 * @return {Object} Object with <code>width</code> and <code>height</code> properties
 		 */
 		getImageSize: function(stream) {
-			var pngMagicNum = "\211PNG\r\n\032\n",
-				jpgMagicNum = "\377\330",
+			var pngMagicNum = "\\211PNG\r\n\\032\n",
+				jpgMagicNum = "\\377\\330",
 				gifMagicNum = "GIF8",
 				pos = 0,
 				nextByte = function() {
@@ -13759,4 +13759,4 @@
 		"extends": "stylus"
 	}
 }
-, 'system');});
\ No newline at end of file
+, 'system');});
diff --git a/src/script/katescripthelpers.cpp b/src/script/katescripthelpers.cpp
--- a/src/script/katescripthelpers.cpp
+++ b/src/script/katescripthelpers.cpp
@@ -157,8 +157,10 @@
          * eval in current script engine
          */
         QJSValue val = m_engine->evaluate(code, fullName);
-        if (val.isError())
-            qWarning() << "error evaluating" << fullName << val.toString();
+        if (val.isError()) {
+            qWarning() << "error evaluating" << fullName << val.toString() << ", at line" << val.property(QStringLiteral("lineNumber")).toInt();
+        }
+
 
         /**
          * set include guard