Hi guys, I am not trying to spam the list. It is just that I keep running into a bunch of issues these days. I am export an mse model of CodeFoo (actually the same exception is raised for a few other models). The exporter crashes when it tries to write out a comment which contains some unicode characters. The comment is in Character>>initCyrillicSmallCapital The raised exception is "This character is not supported by this class of string". I think the solution would be to open the mse file stream as utf-8 encoded. I wonder if the importer would still work then. The other option is to simply not print the unicode comments. Cheers, Mircea.