: This usually means there is a conflict between different stadium mods. Ensure you don't have other stadium packs enabled at the same time.
: Move the extracted .cpk files into your PES 2017 installation directory: download-pte-stadium-pack-pes-2017-kuyhaa
Path: C:\Program Files (x86)\Steam\steamapps\common\Pro Evolution Soccer 2017\download : This usually means there is a conflict