So i updated my Final Cut Pro X to 10.0.4 from 10.0 and all of my media/Projects are on a external usb hard drive and now after updating i'm receiving a error when i launch Final Cut Pro X and the error states "The operation couldn't be completed Input/Output error" and the option i have is click ok and then it opens up FCPX.

If i don't have the external USB hard drive plugin i don't receive the error and FCPX open up with no issues and much fast because I assume it doesn't have to read the media and the projects.

Thanks for you help