Meld 3.18.0-1 does not start

[Rabbe Fogelholm]

I am having problems with meld 3.18.0-1. On startup I get
"fatal: external diff died, stopping at <filename>", where <filename> is a
file to be inspected. My workaround is to downgrade to 3.16.4-1, which
works.

I am running cygwin on Windows 10. My cygwin installation is recently
updated, except I am using version 3.0.7-1 of the cygwin DLL.

Any ideas welcome,
BR / Rabbe Fogelholm