Using either my new PortableApps.com flash drive, or another flash drive on which I've loaded the PortableApps Platform, I get the following message when I try to update apps or add new apps:
"Unable to connect to PortableApps.com to retrieve portable apps. Please try again later. [File Write Error]"
This happens on both a 64-bit Win7 machine and a 32-bit XP machine.