I've tried Max 4.6, 5.1.9 and 6.08. In each case I've noticed that the file types differ from the ones in the grosse package: .maxhelp instead of help and .mxo for the objects.
Does this mean this is an old package that should be recompiled for use in the current Max version? Or is it a matter of altering the filenames?
The error I get when I put the files in a declared path in Max 5 is "motormix: unknown external object type".