Run PQRUpdater.exe and you should be fine

and if its offset update you are looking for then change "<CurrentWoWVersion>17055</CurrentWoWVersion>" to whatever current version number is, it will be inside the .xml file which you can find in offsets folder in your PQR installation, file will be called Offsets_17055.xml, the actual number may vary depending on the version of pqr you have, when editing the file make sure to change the number in the filename to whatever number you write in "<CurrentWoWVersion>17055</CurrentWoWVersion>".