If a project is packaged on the Mac while the Substance Plugin is installed, the resulting .app will fail to open. This does not generate a log.
1. Open the Launcher
2. Download/Install the free Substance Plugin
3. Open any sample project
4. File > Package Project > Mac
5. Open the .app for the packaged project
Result:
The game does not open
Head over to the existing Questions & Answers thread and let us know what's up.