Launcher that doesn't close terminal?

How do I edit a custom launcher which opens a gnome-terminal and executes a command such that the terminal window doesn't close immediately on completion of the command? As it stands, if my thread dies the window disappears berfore I can examine the cause.

tnx, tim

PS: Ok, I discovered how to do this with the profile.

You should probably save the command as a bash script and have the launcher open it. This page might help.

I'll probably do that because the profile solution causes the terminal window to remain (and be scrollable) but it won't accept anymore input, which would probably be what I would want to do if a problem occurred.