I notice that there are other users with the crash problem who are using a non-
standard location for the home directory, and using GNUPGHOME in the Environment
Variables to point to the homedir.
As an experiment, I tested moving the GNUPGHOME pointer from the "User
variables" to the "System Variables" section of the configuration screen. It
makes NO difference - gpgex crashes Windows 7 Explorer in both scenarios,
although Kleopatra functions as expected in both scenarios.