Update: I had a long session with Ronnie Aspe yesterday, and thankfully, this appeared on the Community this morning. By the way, my client experienced an error printing AP checks, as well. This resolution resolved both problems.
Also beware: the old Adobe MICR font will no longer work in Crystal 2011. It requires a true type font. Adobe does not have a TT MICR font - trust me, I wasted a bunch of time trying to work with them. On their website, they claim to have one, but we bought what we thought was an updated set, and had an open type font, not true type. It didn't work. So, if your clients print MICR, there's an unexpected expense looming to purchase MICR fonts.