Open Nucleus Co-op, go to the "Download Game Scripts" section, and ensure you have the latest version of the script for your specific game. 2. Executable Mismatch (x86 vs. x64)
Ensure the OpenNet.dll file hasn't been quarantined by Windows Defender .
High display scaling (above 100%) or mismatched resolutions can cause the plugin to fail during the window-hooking phase. Set your Windows "Scale and Layout" to 100% .