I was using Twitterrific on my iPhone 3GS and all of the sudden my screen flickered, then it crashed and rebooted. When it rebooted the icons for two downloaded apps (Bloomberg and AllTheCountries) were blank/generic icons. I uninstalled them on my iPhone, then reinstalled through sync with iTunes. The Bloomberg icon reappeared as normal, but the AllTheCountries icon is still blank. Any ideas on how to fix this? Thanks...