UMDF echo_driver error 87 ( writeFile) and trace event

hey guys

i'm new driver development!
I configure and test echo_driver of umdf WDK!
I execute the usb.cpp!

First question, I'm must to change the clsid or no???

Secondly, i have a error when i call "WriteFile" => error 87!
I don't understand what is the problem!!!!

FInaly, Can you say me how can i read the traceevent??????? (file log or other, i dont khow how to use dbgview)!

CAN YOU HELP ME PLEASE?????

thanks