Hi panney, thanks for reaching out us.
With regard to the issue you're experiencing, it's pretty likely that the cause is a different revision between the c4dpy executable and the Cinema 4D revision. Please be sure that they both matches (20.059 c4dpy is available here[URL-REMOVED]).
Last but not least, here you can find more detail on the c4dpy executable.
Best, R.
[URL-REMOVED] @maxon: This section contained a non-resolving link which has been removed.