Gary has just posted a new build. You can grab it from his server, or here on this mirror by following this link:
http://www.phidot.org/software/mark/download/
Here is a summary of the major change(s)
Robust-design Pradel models were added for the closed model situations with no mis-identification for a total of 18 new models. These models do not include the gamma'' and gamma' parameters (temporary emigration), so the Pradel robust design models assume no temporary emigration. Also turns out that the mis-identification models do not work well with Pradel models, so these 18 additional models are on hold. The File | New dialog page now only shows one entry for Pradel models, but when you click on this entry, a list of the possible models comes up. Then, if you select a robust design model, you are asked to select from the possible closed models.