yesterday we discovered that carbide.vs does not support application registration files.
in your mmp file causes the carbide.vs build process to show the following message:
START RESOURCE yourapp_reg.rss
"MMP file contains unsupported statements and they where removed during update."
I consider this another flaw in carbide.vs that makes it very inconvenient to use. As app registration files are the recommended replacement for AIF files in 2.8 SDKs my opinion is that carbide.vs lacks full support for the 2.8 SDKs.