MB Star DAS "Internal Error: CSD DLL not found" (fixed)

Can somebody help me? I bought the Mercedes-Benz MB SD Connect C4 diagnostic system. Then the first cat (real car) I hooked up to this is what came up.
Solution shared by customer:

I fixed it.
Updated firmware in MB SD C4 interface and new key


How to update SD Connect C4 firmware?
http://www.mbstartool.com/upload/service/second-step-update-sd-connect.pdf

http://blog.mbstartool.com/2016/09/08/sd-connect-c4-internal-error-csd-dll-not-found/