csu816

I have an issue mapping my sequences to my APC40. I am able to map the sequencer to my APC40 control surface in my first session. But if I quit and reopen that session, I am unable to map my sequences to my control surface. The drag down menu that would usually list "APC40" as a control surface in the mono sequencer is blank and contains nothing. I've also had this issue with Mark Egloff's step sequencer. Any ideas how to fix this problem?