I just upgraded to OptionTree 2.0.1, then 2.0.3, and it's been causing problems with my Eleganza 1.1.0 theme.
When I first upgraded to 2.0.1, I refreshed my homepage and it was as if all the options were lost--the page had lost images, content, and styling. I managed to get my site back, I forget how, but one thing I noticed is that in the theme options all quotes had been prefixed with a backslash: \" (though it still read correctly on the front end).
I also noticed that "The OptionTree plugin is required for this theme to function properly. Install now." now appeared on the top of my WP admin pages. I do see how the theme file theme_pluginsnotice.php adds that notice, but that notice is a helpful reminder, so why is it appearing?
I will email you my loginfo in case you want to go poking around. I have my settings backed up. Thank you!