Hi, I am also encountering errors in features and roles and noticed this error occured due to a corruption in the packages folder as Windows was installing some Windows Updates in the background whilst I was installing SQL 2005 Express.
I have run the readiness tool and encountered a couple of corrupt and a couple of missing packages, I attempted to download, extract, take ownership and permissions, rename the update files and replace the respective files in the package folder as per MS
KB article, but the problem still persist.
Any help is appreciated
Shawn
space536