Puntuado con 3 de 5 estrellas

I just downloaded and installed it. Whenever I try to build an extension, it gives error message as "Error creating XXXX.jar" and creates a build folder inside of my project folder. It used to just create the XPI file.

Any idea or update.
Thanks.

Esta valoración es de una versión anterior del complemento (0.3.0.20100706.1-signed.1-signed).