Hercules RMX 2

Hi All
Hope you can help ... I'm running Cross 3.3.10 on Mac OS X 10.10.2, but cannot get the controller (RMX 2) to work.
In Cross MIDI preferences it seems to recognise there's an RMX 2 connected (this is selected automatically in preferences when connected). When I press something on the controller this flashes, but it doesn't actually activate any functions.
I've loaded the latest Hercules panel, so everything is up to date. I've searched the forum and cannot see what I'm missing. It is supposed to be officially supported, but it doesn't work!
Any help greatly appreciated.
Thanks
Hope you can help ... I'm running Cross 3.3.10 on Mac OS X 10.10.2, but cannot get the controller (RMX 2) to work.
In Cross MIDI preferences it seems to recognise there's an RMX 2 connected (this is selected automatically in preferences when connected). When I press something on the controller this flashes, but it doesn't actually activate any functions.
I've loaded the latest Hercules panel, so everything is up to date. I've searched the forum and cannot see what I'm missing. It is supposed to be officially supported, but it doesn't work!
Any help greatly appreciated.
Thanks