Passolo command line "Cannot Open Project" error

I am running a script to build Language Pack Installers. I first run a /batch on all the project files, this works as expected. I then am trying to run the /simulate on all the same project files and it gives me the error "Cannot Open Project". Do you have any suggestions. I have done this before and have not had problems. This is the first time that I am trying to access multiple project files in the same script.

Tim