On Wed, 7 Aug 2019 13:38:54 -0400 Fred Smith wrote: > So,... now I'm wondering how one figures that out. Since it's your program you have the source code. printf is your friend. Start adding printf statements (to console and/or to a file at your option) with status reports ("widget counting executing", "addition function executing", "huge explosion executing") and use that to find out where it quits. Add more printf's as needed to narrow it down. -- MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com