Further investigation shows that the scanner decided it is not a vst plugin?
VSTSCAN: VST plugin previously scanned
VSTSCAN: WRITE VST DATA...
VSTSCAN: WRITE VST DATA - successfully updated VST plugin inventory record...
VSTSCAN: ---- 170: c:\program files\cakewalk\vstplugins\Hybrid_x64.dll ----
VSTSCAN: [ShortPath] c:\PROGRA~1\cakewalk\VSTPLU~1\HYBRID~1.DLL
VSTSCAN: [RegKey] Software\Cakewalk Music Software\Cakewalk\Cakewalk VST X64\Inventory\c:/program files/cakewalk/vstplugins/Hybrid_x64.dll
VSTSCAN: Previously scanned - NOT a VST plugin
VSTSCAN: WRITE VST DATA...
VSTSCAN: WRITE VST DATA - successfully updated VST plugin inventory record...
Ah! I don't know if it works yet, but I just changed the value of isvst in the registry from 0 to 1 and it is now in the registered list... gonna try running it now...
thanks!