Proworx32 Simulator Issue

I created a new project under Proworx32 with one instruction in network 1, row1 col1.
add 42000 42001 42003

When I run this in simulation, it is not adding register 42001. In other words, 42003 = 42000. Is the simulator functional?

Thanks

have you entered values into the 42000,42001 registers? What are they?

Did you remember to start the controller after putting in emulation?