Being the old comic book geek that I am, I bought three comics today. Two of those comics downloaded just fine. The last one has a "download error" message and will not complete the download process. I've deleted the app and reinstalled it. I've deleted all the apps I had that were running in the background. I've even shut off my iPad and rebooted it. None of this has solved the problem. Is anyone else having this problem? And what can be done about it?