Before updating to the latest version (1.3.6.0), everything worked fine and holding E to bring up the menu during traffic stops worked flawlessly. After updating, holding E to access the menu during traffic stops interferes with LSPDFR and makes the suspect find another place to pull over since it's the horn button. It's an easy fix just to change the bind, but something worth mentioning because it's annoying.
I did make sure to extract it first and then drag the files into OpenIV. I will try again though.
I have retried, and now every vehicle except the Tahoe works. I assure you I am installing it correctly - extracting it from the zip, dragging the files into OpenIV, dragging the xml files in appropriate location.
A quick update:
When I look in the files, the tahoe contains a police3.ytd but no police2.ytd
http://prntscr.com/eonwgp
Thanks for the models, they look great.
I have a big problem, however. All of the models except the first one are glitched very badly. I followed all of the installation instructions, so I have no clue what the problem is.