rollback / uninstall updates? gscan2pdf crash after update

Tue May 12 16:57:38 UTC 2015

Following updates today, gscan2pdf freezes when attempting to save PDF. (It
is the version from the PPA so it's not a bug that Ubunutu passed through)
I have posted the problem to the gscan2pdf help list. BUT

Is there a way to identify and roll back the specific updates today?

Thanks,
Patton
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