Error while transferring files from computer to computer

I am attempting to transfer a set of models that I ran on one computer to a different computer. We are using MARK version 6.0 on both computers. After I transfer the set of models, then open a model on the second computer, I get the following error message:
Parameter matrix not the correct length in output. (Then there's following text about return vs. expected length.)
What is going on here? Thank you in advance.
Brian
Parameter matrix not the correct length in output. (Then there's following text about return vs. expected length.)
What is going on here? Thank you in advance.
Brian