I'm checking with ActiveState about the latest version
If you're running a 5.10.0 build of ActivePerl, there should be no trouble. Just ppm remove Tk then ppm install Tk and you should end up with Tk-804.028.
But, if you're running a 5.8.x build of ActivePerl, then it looks to me that ActiveState provide only 804.027. That being so, you probably need to install Tk from the same repository that gave you the Tk::Zinc ppm. (One would hope that rep provides a ppm of Tk-804.028.)