I don't see that you have any other option.
After all, you just got done telling us in the post immediately before that "Catholics are protected from error by Christ's promise to them, what you bind on Earth will be bound in Heaven and what you loose on Earth will be loosed in Heaven......do you think that He would have made that promise and then allowed errors to be promulgated????"
So which is it? Protected from error or not?
You can't have it both ways. Either it's protected from error, infallible, or it's not.
Honestly, the mental gymnastics Catholics engage in to rationalize the contradictory teachings and beliefs they claim about their church is absolutely staggering in its proportions.
The Catholic church, as an institution is protected from error....individual Catholics, you for example, are OBVIOUSLY not protected from error...