- Setting 'Preload Assets' throws parser error

Reproduction steps

1. Open Build Profile Window (File > Build Profiles)
2. Create a build profile (such as for Windows)
3. Add a custom player settings to it
4. Under the Other Settings > Optimization section, change the Preloaded Assets Size to 1 and add an entry to Element 0

Expected behaviour

No parser error in the console

Actual behavior

Console will throw an error like this:

Unable to parse file Assets/Settings/Build Profiles/Windows.asset: [Parser Failure at line 170: Expected closing '}']