Forgot to update the Rakefile and build.xml files from the previous commit. Thanks to @jitter for the catch.

Author: jeresig

Rakefile

@@ -28,7 +28,7 @@ version    = File.read( File.join( prefix, 'version.txt' ) ).strip
 
 # Build tools
 rhino      = "java -jar #{build_dir}/js.jar"
-minfier    = "java -jar #{build_dir}/google-compiler-20091218.jar"
+minfier    = "java -jar #{build_dir}/google-compiler-20100917.jar"
 
 # Turn off output other than needed from `sh` and file commands
 verbose(false) 
@@ -135,4 +135,4 @@ def cat( files )
   files.map do |file|
     File.read(file)
   end.join('')
-end
+end

build.xml

@@ -89,7 +89,7 @@
 				<include name="jquery.js" />
 			</fileset>
 			<arg line="-jar" />
-			<arg path="build/google-compiler-20091218.jar" />
+			<arg path="build/google-compiler-20100917.jar" />
 			<arg value="--warning_level" />
 			<arg value="QUIET" />
 			<arg value="--js_output_file" />