Check which MIDI mode you are using in CbB. If it is UWP, try the old one.
Otherwise:
1) Remove Mackie Control from Control Surfaces section
2) Disable its MIDI In and Out in MIDI section
(restart CbB... just in case)
3) Enable In and Out ports
4) insert Makcie Control
5) Check.... if that still does not work:
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6) Close CbB
7) in Windows Explorer (not Internet Explorer!) visit "%APPDATA%" folder. Find subfolder for CbB (for Sonar it is "Cakewalk/<Sonar version>", but I am not booted into Windows to check what it is for CbB...). And DELETE TTSSEQ.INI file there
8) Start CbB and configure MIDI/Mackie control again.