Logic Pro 9 What happened to my sounds?


I went back to an older project, and when I loaded it, it says it was unable to find "Hybrid Bas," but I'm not sure why... I haven't changed anything in the computer since I originally worked on this project. I'm not sure what "Hybrid Bas" is, but I guess I must have used it.

I saw some issues online that seem to be related to the Hybrid Bas, but the posts are all from '07/8 with logic 7 and 8. I've only ever used Logic 9 express, and really not sure those problems relate.

Any ideas?