x-windows emacs crashing with latest updates

[Gulliver Smith]

With recent upgrade of cygwin, emacs is always crashing. Windows XP
VirtualBox virtual machines (don't ask)

setup.exe version 2.8.50 (32 bit)

tried both emacs 24.3.93-1 and 24.3-2

X-server is cygin 64 bit on windows 7.

It was working last week. Now silent crash, no log entries.
Occassionally a core dump? No windows

Does anyone have suggestions?

Thanks
Gulliver

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