Place the "ball_pack_v6.cpk" in the PES2019 download folder "C:\Program Files (x86)\Steam\steamapps\common\PRO EVOLUTION SOCCER 2019\download" & add to DpFileList.bin with DpFileList Generator 2019 v1.1 by @Baris ...Make sure you have no other/old ball packs installed in the PES2019 download folder, this is an AIO pack..no other packs are needed.