Possable bug running the css-validator in command line (Win32)

Hello, I think I may have found a bug in the css-validator, when I run
it through this command.
 
C:\>java -cp C:\css-validator-2004-02-17.zip
org.w3c.css.css.StyleSheetCom \ http://www.example.org/
java.lang.NullPointerException
        at org.w3c.css.util.HTTPURL.getConnection(HTTPURL.java:181)
        at org.w3c.css.util.HTTPURL.getConnection(HTTPURL.java:251)
        at org.w3c.css.css.StyleSheetCom.main(StyleSheetCom.java:276)
html request http://www.example.org/
file : http://www.example.org/
No error or warning found
 
..It makes the above NullPointerException's
This is my versions of java etc
 
java version "1.4.2_03"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode)
 
Microsoft Windows XP [Version 5.1.2600] (WinXP, SP1a)