TB wanted me to try older versions of the driver, i tried v1.8 & v1.7 - same
the problem is Crestron has changed S# somehow & updated the firmware in all the 3-series except the MC3
my only guess as to why the MC3 has been orphaned is they lost the source code...
?mark
more testing...
went back to pre-200 libraries environment - v1.2 was the most current CCD
compiled & runs w/o splus error - however, not enough signals to manage smart tv
went back to current environment - loaded v1.2 - same splus error