One one of my Macs, I had this problem where it wouldn't update, so I removed Acrobat and reinstalled it, and then it has been updating fine ever since. This was three updates ago.

My wife's iMac also has Acrobat, and that one is complaining about the update. So I guess I'll have to do a reinstall.

Removing plugins or extra languages is part of the issue, though I didn't do that on either install.

They need to fix this.