Unrecognized option or flag, -sourcerootforupload

Why am I getting the error Unrecognized option or flag, -sourcerootforupload ?
   In order to maintain compatibility between the 8.1 and 9.0 version of the plugin I used a new flag on the deployment engine. 
   The flag was added with service pack 4 on 8.1.  If you are not on service pack 4 or later you will see this error.  If you send a note
   to the mojo mailing list I can create a special version for service pack 3 and earlier.

 

你要是碰到这个问题，上面是原因，最好你自已布 或从bea网站上下载个sp4以上的版本！