Thinapp tips: Open File - Security Warning, Unable to Register

I am evaluating Thinapp 4.0.1 and I noticed a couple things. We are streaming the apps and users connect to them with a logon script using Thinreg.

#1. The error "Unable to register
server\path\app.exe" pops up for users if they are not able to run the app based on AD membership when we use the PermittedGroups setting in the Package.ini.  In another post I saw this may be a bug?  I tried using the Thinreg /Q or /Quiet switch on the logon script.  Why is this warning not suppressed?

#2.  When launching an app the user sees a Security Warning "The publisher could not be verified" message.  If they click OK the app will run.  Did I forget to do something here?  Example:

Name:  Microsoft Office Excel 2007.exe

Publisher:  Unknown Publisher

Type:  Application

From:  OurDomain.com

Thanks in advance!

Scott