Hi, When I have a tk window open and I close it with the close (X) button up in the corner (Windows 98), Tk.mainloop returns and the program continues execution. (Of course, there usually is no more program, but never mind that for the moment.) However, if I click a button with command {proc exit}, the whole ruby program stops right there... do not pass GO, etc. Does anyone know why this is? Can I close my tk window and have Tk.mainloop return to the rest of the program nicely without clicking the "X" button? What happens when I click the "X" button? Thanks, Chris _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp