Error opening project in Logic 5.5

I tried opening a project in Logic 5.5 on my Mac when this error message popped up. I also tried opening other projects of mine but still got the same error message. I was getting nervous thinking that all my projects were damaged. Good this I had a backup and so I restored the project supposedly in error. I tried opening it again but I still got the same error message, see below.
Any advice on how to resolve the error?

Logic Platinum
Audio configuration is damaged.
