PlateBuffs 1.18.1 (r229) was the last and final version of the addon released on June 23rd 2014 for WoW 6.0.2 before the author stopped updating it.
- Download the package.
- Open the archive, then open folder
PlateBuffs_WoTLK-main, extract the single folder toInterface\AddOns. - Enjoy!
Though it's not required and I have never asked for it but people keep asking for it, if you want to show love and support, your PayPal donations are most welcome to bkader[at]email.com.