Trust Not Granted to Full Trust XBAP Signed With Certificate

I have an XBAP 开发者_开发技巧which needs Full Trust to run. I have had it working on a number of client machines by adding a temporary certificate to the Trusted Root Certification Authorities and Trusted Publishers. This is fine on a small scale, but I really don't want to have to do this on every machine where the app will be used.

I was under the impression that if I purchased a certificate from certification authority and signed the manifests with this, the app would run with Full Trust, or at least prompt the user with the option to run. This however, does not appear to be the case.

Do I still need to configure each individual machine to allow the app to run with full trust? I am hoping I have simply set it up incorrectly.

Thanks.