I have used Active State for quite a number of years. I have never seen any problem installing Tk with the AS ppm tool. If you had a problem, it was probably because you were not using ppm (Perl Package Manager).
Active State has changed their Perl ecosystem and ppm is no longer available. There are pro's and con's vs Strawberry. I am not sure how this will work out. AS has discontinued perlapp (which made .exe files) and for me, that is of bigger concern as this app was easier to use and better than the freeware versions.