If I close a process gameconqueror is attached to, before closing gameconqueror, the application (gameconqueror) continues to run, spamming "Failed to attach to process: No such process." Or similar error. gameconqueror cannot be sent kill through process name, nor process ID since gameconqueror doesn't use its own binary as a name for its process. Nor does it use scanmem unless it's actually scanning.
to kill a process proc type:
pkill proc
If you dont know the name of proc you can type
pkill pr
and hit tabular. You will get a list of all processes running and beginning with pr
In Terminal type
ps ax | grep gameconqueror
At the beginning in the resulting line/s there is the Process ID.
To kill the process, you have to enter:
sudo kill -9 <process id 1> <process id 2>
This works for me, when I had problem with firefox and killing it
sudo killall -9 firefox-bin