Lost settings in update ("polite" version)

I wrote this under a different thread, but I was told I was being “impolite”. (!)
I’m therefore opening a new Topic with the same title.

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I run dozens of WordPress sites and I’ve updates FSCF many times, and nothing bad has ever happened. But this latest update messed up all my fields!
And I can’t even change the settings from FSCF control panel. When I save the settings they don’t get saved!
Any fix coming?

http://wordpress.org/plugins/si-contact-form/