May be some DLLs glitch... Try reinstall CS plug-ins https://www.cakewalk.com/...rol-Surface-Installers
Or install manually from github.
 
Another idea (untested): do you block Pitch Bend MIDI on recording? That should not influence CS, but who knows... (Mackie faders are sending PitchBend).
 

azslow3
May be some DLLs glitch... Try reinstall CS plug-ins
Or install manually from github.
 
Another idea (untested): do you block Pitch Bend MIDI on recording? That should not influence CS, but who knows... (Mackie faders are sending PitchBend).
 

Hey Alexey,
 
Your last idea did the trick for me!
I did unblock the recording of Pitch Bend and my Mackie Control began to work like it did before!
Faders working as expected again.
 
Thank you so much!
Jan Willem

Well!
azslow3 gets the "Helpful" ribbon.  I have a StudioLogic VMK-188 controller that started acting up prior to purchasing Platinum.  It is a known problem that the StudioLogic will start sending pitchbend messages for no apparent reason.  It is attributed to failure of the circuit board within the unit.  The workaround was to block pitch bend messages.
 
So, per azslow3's recommendation I unblocked the pitchbend control data and VIOLA!
 
Thanks everyone for the help!!!!!
Rich
 
EDIT:  Went back to mark the post as solved to discover that it had already been done for me! LOL! Thanks (Craig?)