This article is from the GNU Chess and XBoard FAQ, by Tim Mann firstname.lastname@example.org with numerous contributions by others.
This problem is fixed in WinBoard 3.6.1 and later versions. If you still
see it in the current version of WinBoard, please report it.
Background: Versions of WinBoard prior to 3.6.1 sometimes crash Windows
95 (but not Windows NT) at the end of a game or when you use the Time
Control dialog. The crash occurs when WinBoard kills off a chess engine
process and quickly starts a new one. WinBoard 3.6.0 does not exhibit
the problem unless you give it the -xreuse (-reuseChessProgram False)
flag. WinBoard 3.6.1 and later fix the problem completely.