Resolve more ARC-related crashes. This should solve all the NotificationCenter issues.

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@602 98b4c264-8670-11de-a133-9d545b4d7674
Remove excessive logging of time remaining code.

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@603 98b4c264-8670-11de-a133-9d545b4d7674
1.5.7 Final

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@604 98b4c264-8670-11de-a133-9d545b4d7674
Use localized OK button in alert.

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@605 98b4c264-8670-11de-a133-9d545b4d7674
Set didFail selector so cache update doesn't continue indefinitely.

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@606 98b4c264-8670-11de-a133-9d545b4d7674
Update version number.

git-svn-id: https://get-iplayer-automator.googlecode.com/svn/trunk@607 98b4c264-8670-11de-a133-9d545b4d7674