I was correcting "Life is a Highway" by Rascal Flatts, like correcting squares that were supposed to be apostrophy and when chordie saved it, it looked ok. But, then I recalled it from my songbook to print it and it replaced the ' with an i with an umlout, an upside down question mark and a 1/2 symbol!!!! Funny, though, it only seems to do it with the apostrophy.
I've also seen this on other pages that I've printed.