Corel KPT Collection 7 Problems on Windows 7 64-bit:

Thanks to dear Rikk Flohr for help, from forum http://coreldraw.com/forums

Direct message address: http://coreldraw.com/forums/p/17852/76173.aspx#76173

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.