Problems with The Strange Character Sheet

I am experiencing some strange error with the Strange Character Sheet. This character get an error each time I try to add a skill or Special Ability.

Edit: Haven't been able to get image link to work (this is probably user error in that I've never really used it before), but can see an example here: http://imgur.com/a/2QJ2a

I'm at a wedding this weekend, but I'll take a look as soon as i get back on Tuesday. Sorry for the trouble in the mean time!

No rush. Can put all that stuff in notes at the end. Enjoy your weekend :)