You should be able to open these...
Now I have taken a look at the Tetris example
Suspecting that you don't have the old fastlopp object 1.5 installed. I've stripped it from the application and uploaded it:
http://www.burfelt.com/tetris_engine.zipThe stripping of fastloop means that the code that checks for and destroys block no longer work, but you get the idea, and it can easily be replaced by MMF's buildin loops