I can NOT help, sorry!
I did search for both "Error code 37763" with all sorts of combinations.
I also tried "Can Kombi K7". (with Canbus and Combi and...)
Are you sure "error code 37763" and "Can Kombi K7" is exactly what the GS911 told?
Your english is good enough :-)
I hope others can help you!!
Haakon