The version of the typeface Mrs. Strange, found on Dafont at:
http://www.dafont.com/mrs-strange.font
is faulty.

Download it yourself and take a peek when you try and open it in FontBook or even preview it.

The version found at the creator's site (one of the clunkiest, naffest designer's sites ever)
works fine though. It can be found here:
http://www.slubdesign.com/samples/fonts.htm
Hope this is of help,
cheers,
matthk

The version here on Dafont works fine. Problem is on your side.