Latin Characteres

This is a great plugin, simple and efficient.
Perhaps there’s an issue with importing some latin characteres.
I have some custom fields as checkboxes. All works fine except when there’s some accented word.

So i have something like :
a:3:{i:0;s:4:”Word”;i:1;s:16:”Word with Acénté”;i:2;s:7:”another”}

Nothing inputs any of those fields. (other data inputs normally).

I also tried using html entity (ó).

Without that accent, everything goes fine.