I wanted to create a Season Pass for "It's Always Sunny in Philadelphia" a while back, but there were no upcoming episodes in the schedule. I used TiVo Search to find the show and took advantage of the option to create an autorecording Wishlist. Now that the show is in the schedule and findable via a title search, the Wishlist isn't recording anything.
TiVo Search created the Wishlist as a title search -- correctly spelled, properly cased and punctuated. Actually, the punctuation was better than can be entered manually, given the contraction was added. I'm going to guess that the punctuation in the contraction is screwing something up, but that's just a guess.
For the record, creating a Wishlist by hand worked -- so, assuming case does not matter and the one character didn't push the title over a length boundary, it does appear to be the "'" in the "It's".