Applications not showing in apps screen

[WPCentral Question]

I have a weird problem: every time I reboot/restart, my tiles screen is fine but the second screen shows no applications at all. It's completely blank. This started a couple of (2?) weeks back and has not changed with the latest update (yesterday). Any thoughts? Would hate to reinstall the entire phone... Tried shutdown, soft reset. Most of my apps are on a 64G SD. If I eject and put back in the SD then all apps reappear by magic but it's a hassle. I have a 1320 with the latest Dev Preview update..