PokerTracker

You can download 4.18 "here"
The link is actually 4.17.15

I cannot reproduce this. In the popup message there are two links for PokerTracker 4 and they are both working correctly. The first link at the top labelled "Download it here!" goes to the main PokerTracker 4 download page where the latest version of PokerTracker 4 can be downloaded (currently v4.18) and the second link labelled "downloaded here" is supposed to be for PokerTracker v4.17.15 as anyone using a 32-bit version operating system wouldn't be able to upgrade beyond that:

I may have mouseover the wrong link. I could not reproduce either because I checked "dont show me again"