Stupid Corel support - no one more Corel software to purchase. No email direct support, no help.
KPT Collection and many many other plugins do not work in CS4 64 Bit. The plugins have to be rewritten for 64 Bit and few plugin manufacturers have yet done so. Considering Vista wasn't even officially supported by the KPT set, I am not surprised you are struggling with installation on Win 7.
I have successfully installed and run the KPT tools on Win Vista and Win 7 both 64 bit but only the 32 bit version of CS4 will run them.
To get around the problem.
Launch PS CS4 in XP Compatiblity mode as an administrator.
Invoke the plug in. Enter your serial number.
Close CS4
Reopen in Normal Compatibility mode and it should be fine.
I posted instructions for this on the CNews server two years ago but I see it has been cleaned off.
Good luck.
I am having the identical problem as Martes, but I am trying to use my KPT Collection with Painter 11. Should I try to follow these steps with Painter? Thanks for your help