Let me start by saying that I understand that Modelio are in the business of selling software and not just giving it away. So far I am quite impressed with what I can do with the "Free" version. However one restriction in the "Free" version that really does frustrate me is the fact that you cannot upgrade/open models created by earlier versions. I have just gone from 1.0.1 to 1.1 and luckily chose to leave my old version in place.
I really think the name Free is a misnoma, it should be trial or something like that. The fact that I cannot upgrade to the latest version and take my work with me really means that I am stuck with either buying the non-free edition or sticking to the buggy version I have.
This is clearly not free software in the Linux sense of the word. It is a good product but it is a trial product and that would have been a more honest description.
Since I wrote that above I've found this
http://www.modeliosoft.com/en/products/product-range/105.html page that suggests it should be possible to upgrade (see the other section right at the bottom. So perhaps this is a bug in the 1.1 or 1.0.1 version.
OK I was contacted by support and they offered me a way to work around this problem. I have still to see if I will be able to upgrade but I am quite confident. This certainly does improve the situation a great deal.
