PowerLoom - could not find or load main class edu.isi.powerloom.PowerLoom

I am trying to install PowerLoom in my windows. I have Java 1.7.0_60 and Java SE Environment 1.7.0_60-b19. By the way, when I want to make this command to create the file powerloom.bat :

java –cp powerloom.jar;stella.jar edu.isi.powerloom.PowerLoom

I have this error could not find or load main class edu.isi.powerloom.PowerLoom

Do you know what's wrong ?

Many thanks.