Who's using Mama? It installed fine on my machine and I imported my world into it with no problems. And the world plays fine.
What I can't do is use the scripting enhancements. I can run a script with that free IDE. But if I use the regular Mama IDE and I include a command from the Mama language in one of my methods, I get an IOException.
The docs say that a freestanding script will be run when the program starts up, but nothing else about how to make that work. Just put your .mama file into the same directory? I assume I'll get the same error, if it does execute. The other issue is the File Save requester on the script editor (the free IDE) -- it won't show the contents of any folders, not even sub-folders!