We're having a potentially related issue. When we try to edit app details and save, we get the message below. We also see this message when we try to add a new app, but the app does show up in My Apps despite the error. Sorry! an unexpected error has occurred. This error has been forwarded to MySpace's...

if you edit you application by clicking on the "edit details" and you don't include your icons, when you save, the old icons are wiped out.