A script with a nested serializable struct causes a crash on Windows Phone 8. A class can be used instead of the struct as a workaround

To reproduce:
1. Open attached project "repro.zip"
2. Build & run for WP8
3. The app crashes after the splash screen

When native debugging with visual studio an "Access violation reading location 0x0000001C." is thrown.
Then "The program '[1848] TaskHost.exe' has exited with code -2146233082 (0x80131506)."