Escape characters in label

Hi,

Thanks for this excellent plugin, I’m actually using it to choose and display category pages on the same site (called by their url), and it works flawlessly.

I have one small issue though: I need to put an apostrophe in the label, and no conventional escaping works – whether ' or ´: each time, when I try to save I get the “All Names and URL fields should be filled” error, which means that something is breaking up somewhere.

Any suggestions for this ?

Thanks again,
RP