1 - When I tried to install v0.8 it's stop with the message:
The language specified is not supported by any of the installed packages.
And refused to install....

Stack for the error:
System.IO.FileNotFoundException was unhandled
  Message="The language specified is not supported by any of the installed packages."
  Source=""
  StackTrace:
       at EnvDTE80.Solution2.GetProjectTemplate(String TemplateName, String Language)
       at ToolboxManager.Task.Install(DTE visualStudio)
       at ToolboxManager.Task.Execute(DTE visualStudio2005, DTE visualStudio2008)
       at ToolboxManager.Installer.Execute()
       at ToolboxManager.Program.Main(String[] args)
  InnerException:
2 - I was register to receive a notification when a new version will be available. I never receive this notification for v0.8