I haven't seen the SCCM 2012 admin console, but I have done a few mmc snap-ins. Try modifying your package.ini (assuming sccm uses mmc) with the following.
[Config Manager Console.exe]
Source=%SystemSystem%\MMC.EXE
CommandLine=%SystemSystem%\MMC.EXE /32 "Path\To\File.msc"
Hopefully that helps.