DLL files can send commands to mIRC. This DLL is obviously doing that. It needs no auxiliary script files to /echo. As you can see, it's clearly giving you debugging information on how it's loading a bunch of UI elements (rebar, treebar, progress, richedit, etc) which makes it pretty clear that it's debugging information coming directly from the DCX dll. You must have flipped a switch somewhere to turn on debugging info, or you downloaded a version of DCX with debugging info on. The only way to stop it would be to flip that switch or use another version of the dll, depending on what the issue is... but it's really not a complicated one.
