Show errors in Express Mode

[MrSmithtastic]

Express mode is getting better but there's still one big annoyance with it. It knows when there's an error and will even stop you from doing certain things if the error is breaking it. But it doesn't show you that there's anything wrong. Please show the red cross on Express Mode so that we at least know that something's not right. Even if we have to load in full to repair it, the warning would be useful!