Thanks to all the users who wrote in about the Doris crashes after updating to iOS4, a new binary was uploaded to Apple last night and should be with you shortly! Thanks for your patience.
There was an issue with the new Yahoo login feature on our Read Later app, this is now fixed since our latest update went live in the App Store last night.
Yahoo had changed the HTML on their login page which we scrape to allow for easy logins from our app. The fix, which consisted in changing one line of HTML, took over a week to be accepted by Apple!
Apologies for the inconvenience.