Tom,
A signed VI should work properly in the LabVIEW environment. Are you using the latest version of LabVIEW (version 6.0.2)? If not, you should download the update from our website. Also, you should make sure you are following the signing procedure properly when signing your VIs...the signing procedure is on the Signing Toolkit webpage.
When you say a signed VI does not work in LabVIEW, what do you mean? Do you receive an error, a crash, a hang, or something else? Have you tried the VIs on the signed VIs gallery on our website? You should be able to access the gallery from the LabVIEW Player main page. If those VIs work properly, you may be doing something wrong in the signing process.
I hope one of these suggestions gets you pointed in the right direct
ion. Good luck with your application, and have a pleasant day.
Sincerely,
Darren N.
NI Applications Engineer