"keychain not found" error messages pop up all the time, please help!

Hi, Ive been constantly getting "keychain not found" error messages ever since i updated to OS X and cant sync messages, facetime, calendars etc. i've tried keychain first aid and get this message:

Verification started

Checking keychain configuration for Lee (user ID=501)

Home directory is /Users/Lee

Checked login keychain

Error: login keychain not found

Unable to get info for ~/Library/Keychains/login.keychain, reason: The operation couldn’t be completed. No such file or directory

Checked default keychain

Checked keychain search list

Problems were found; you should choose the Repair option to fix them

Verification failed

Can anyone help?

Thanks