It depends on the injector you are using. Normally, when you write in the process box 'crossfire' and below a message showing your injector's status,saying something like 'waiting for dll' or 'crossfire.exe process' it's because you already choosed a valid process, but when it keeps asking for the process like 'waiting for process' then it's because it doesn't find the process you wrote as valid.(usually when this message occurs with the example i wrote, it's because you need to add the '.exe' to the process name. You must see if you need to put the '.exe' or without it. Some injectors are just more advanced and already expect a process to be named '.exe', others don't. It's up to you to find it out with the tips i just gave you.