He says they have no collision with the blocks...
Maybe his .CLS file simply isn't being written.
Maybe he is trying to create the .CLS the old way which doesn' work.
I know that newton objects have no collision with models that aren't newton...
For static models or map entities you could try making it a newton object with a really high mass...
You could also create special collisions for it with child entities for compound collisions.
Another way is to use the new collison system... it may work... haven't tested it yet.
Not sure if object with my.polygon set to on have per-polly collissions with other objects or just the player.