I use the Hercules 4-Mx with Cross,
First of all make sure you have the latest driver package from Hercules. A new one was released a few weeks ago
http://ts.hercules.com/eng/index.php?pg ... =262&cid=1Download and install
Go into the MIDI tab and choose the MK4 in the MIDI controller list. Move a slider or press a button and see if the tab goes green.
Also you need to set CrossDJ to use the MK4 ASIO soundcard. Please see the image below. It is done with a earlier version of Cross but the audio set up is still the same
Sound setup.jpg
From the Soundcard drop down you need to choose the option
"Hercules DJ Console MK4 ASIO"
Or something like this

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