Andy, no it was the original .cdr file that I was talking about.
I'm running X5 and when it opened it did say the file contained an invalid object. Options were to Abort, Retry, and Ignore. Both Retry and Ignore both display just the MOK. Perhaps this version is a bit more persnickety since he did say it was like from Corel Draw 3.0, but I am surprised it's not backward compatible.
Looking at your .pdf, it has the text for me to see.