The problem started with IPhoto. There was a newer version which the App Store asked me to download. iPhoto never downloaded - It gets to 10.4MB and then restarts the downloading process. Recently I bought Numbers from the App Store. This has the same problem. The new application just downloads to 10.4MB then restarts. I have now paid for two applications which I can't download or use. Apps from other developers download and install just fine, the problem seems to be limited to Apple Applications. Is there any advice?