That's what you get when doing search/replace blindly...

Author: mrdoob

README.md

@@ -55,7 +55,7 @@ Albeit theorically not as accurate the widget can also be easily inserted to **a
 
 ### Change Log ###
 
-2011 05 28 - **r6** (4.102 KB, gzip: 1.387 KB)
+2011 05 28 - **r6** (4.103 KB, gzip: 1.384 KB)
 
 * Updated check for memory accesible browsers.
 * Renamed MEM to MB for consistency reasons.

build/Stats.js

@@ -252,7 +252,7 @@ var Stats = function () {
 
 				if ( _modesCount == 3 ) {
 
-					_mb = performance.mbory.usedJSHeapSize * 0.000000954;
+					_mb = performance.memory.usedJSHeapSize * 0.000000954;
 					_mbMin = Math.min( _mbMin, _mb );
 					_mbMax = Math.max( _mbMax, _mb );
 

src/Stats.js

@@ -5,7 +5,7 @@
 output = '../build/Stats.js';
 string = "// stats.js r" + str(rev) + " - http://github.com/mrdoob/stats.js\n";
 
-os.system("java -jar compiler/compiler.jar --js ../src/Stats.js --js_output_file ../build/Stats.js");
+os.system("java -jar compiler/compiler.jar --language_in=ECMASCRIPT5 --js ../src/Stats.js --js_output_file ../build/Stats.js");
 
 src_file = open(output,'r');
 string += src_file.read() + "\n";