Ensure you're using the latest version of the CPK File Builder. Visit the official website or forums to download the updated version. Sometimes, newer versions address compatibility issues and bugs.
The best part? The fix is remarkably effective, and I've experienced no further problems with CPK file corruption or errors. The game runs smoothly, and I've been able to enjoy all the features, including online multiplayer and editing. cpk file builder pes 2017 fix