Sorry silentsoundstudios: unfortunately 10.4 is not yet supported. (it's on our to-do list to support it, but right now we are overloaded with other work)

silentsoundstudios, I get the same issue. The message I get is, "There is no default application specified to open the document "d-touch_sequencer"

Running iMac G5 ,Mac OS X version 10.4.11