Basically, you should supply more information then just Hello !!!
Anyhow here is some hint about that Error:
0xC0000354 -1073740972 Status_Debugger_Inactivehttp://inetexplorer.mvps.org/answers/63.htmlhttp://www.faultwire.com/solutions-exception_core/Debug-0xC0000354-*1718.html
Debug exception 0xC0000354- 1073740972
An attempt to do an operation on a debug port failed
because the port is in the process of being deleted.
The DebugPort specifies a debug connection to the system
kernel (a system under test) via a serial (rare today), USB
or FireWire connection. The connection has been turned off, but
a request was made to continue to use it.