Hi-- I'm receiving this very same error: "Problem with processing the model: terminate called after throwing an instance of 'NEWMAT::Incompatible Dimensions Exception." I've only tried this on a linux platform running RedHat RL 4 with FSL 4.1.4. I can try this on a MAC and see if it works as was listed a year ago, but I wanted to know if anyone found a better solution. Thanks, Ben