Hi,

don't know if this will be of any help to anyone attempting to use a midi controller to control layer intensity in the future, but it seems to me that the intensity of layers 1- 8 respond to midi messages on Channel 1, CC values 81 - 88

You can view incoming midi messages in Catalyst Control, look for Midi Controllers about halfway down. Select an appropriate output (doesn't seem to work if you don't) for you attached device, and set the channel to Channel 1. The device should be on Behringer BCF to work with these settings. If you setup layer one so that you can see it respond onscreen to intensity changes, it can help whilst tinkering with settings

The other available devices (eg Mackie Control Layer 1 - 8) are mapped differently...