I find it interesting that some people say an app works for them while others say they cant get them to work. I did a wipe of my phone and was able to get Viigo to run where I was not able to get it to work before. Now I cant get Weather bug to function and it was working fine before the wipe.
Suppose it depends on your OS version and whether or not the Apps support it. I see you're running .83, since that's not an official release, I'm sure it's kind of hit or miss on whether or not apps are actually going to work.
The latest version of Viigo is beta anyways, isn't it?