Also, you could try temporarily renaming the .idlerc folder in your User folder; this is where IDLE stores several configuration files which can be a cause of problems if they have incorrect values.  And you could also try to run IDLE from the Python command line.  Launch Python 3.2 -> Python (command line), then in the interactive interpreter enter:

    import idlelib.PyShell
    idlelib.PyShell.main()

Additional error messages may show up in the command line window.