ATA settings resetting themselves to default

I posted earlier about the mystery of why one of the sites I manage constantly has it's Atahualpa Theme Options re-setting itself. I re-import the theme options and everything is fine, but really it's annoying. I know for sure the client isn't doing it, because she doesn't even login as an admin.

I have tried everything. I upgraded wordpress several times, and went to the latest theme version of 3.6.4. All plugins are up to date. Same host and configuration I have used for years, and I have used Atahualpa for years on several sites, with no intervention.

The only thing different is a plugin called Frontpage-Slideshow, so I have removed it and will see if that fixes the problem.

Just wondering if anyone thinks it could be a plugin conflict or?