The Profile Maker 5 Multicolor Plugin is not supported on Photoshop 64 bit editions.
To take advantage ot the Plugin, the 32 bit Photoshop version needs to be installed (additionally)
on Windows systems.
On Windows XP 64bit systems the Photoshop 32 bit edition will be installed by default in addition
to the 64 bit version since the 64bit edition is not officially tested and supported on XP.
On Vista and Win7 64 bit system you may choose during the install dialog which version(s) to be