I got the same thing, but I have not had the chance to look into it.
What I can tell you is this, and I hope I am on the right track.
Makewhatis.cron is a script that I assume does something for system maintenance. In this script is a command zcat with a parameter or function that is not set correctly. A PIPE is a command that allows you to pass the reulsts from one command to another.
Now it is also possible that, inorder for this script to function proerly there needs to be another file generated, by another scheduled script that has not yet run in which case, time will take care of this.
If anyone has a more accurate explanation, please post. In the mean time I will dive into it and see if I can figure it out, and post my findings.