It's a bug in IDL 6.2 For Windows, Barry, not present before that version and already fixed in just released IDL 6.3. The exact buggy behavior is:
If a file in the IDLDE editor does not have a "PRO" or "FUNCTION" block, then IDLDE 6.2's algorithm for suggesting a file name to the Windows file chooser faills and the Windows file chooser silently exits before it ever displays.
My favorite fix for this is to create a dummy PRO line at the top of the file, e.g.:
PRO temp
then do File->Save As..., then delete that dummy line, then do File->Save.
Of course, an even better fix is to upgrade to IDL 6.3.
James Jones
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