It'd be nice if I had DW to play with. (Hmmm... I wonder if running an older version will be dangerous if I don't go past Preview? Naaah, not even worth trying.)
DW is a bit OCD on that, it won't run on a disk that it can tell was used by an OS that's beyond the version it supports.
And yet a while back a poster reported running DW v 4.x on a version of OS X that, per Alsoft, was not supported.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire