When I installed KTP on an earlier machine running XP for some reason (I don't know why) I saved all the installed files for each version.
A bit of luck because the installers for these will not run on Win 7.
Now running Photoshop CC I simply copied the previously installed files from the external drive they were archived on to Photoshop CC's plugins folder.
KPT3; 5; 7 and Effects all work perfectly on Photoshop CC.
So if you can find an old PC with a pre Win7 installation I would try it.