I am thinking its a configurator tool bug. It should work.. Here is an output from a 6506 with Sup1/MSFC1 and a 3000W PS.
Contact your account team or pre-sales
Console> (enable) sh ver
WS-C6506 Software, Version NmpSW: 8.2(2)
Copyright (c) 1995-2004 by Cisco Systems
NMP S/W compiled on Apr 7 2004, 11:23:12
System Bootstrap Version: 5.2(1)
System Boot Image File is 'bootflash:cat6000-supk8.8-2-2.bin'
System Configuration register is 0x2102
Hardware Version: 2.0 Model: WS-C6506 Serial #: TBAXXXXXXXX
PS1 Module: WS-CAC-3000W Serial #: SNIXXXXXXXX
PS2 Module: WS-CAC-3000W Serial #: SNIXXXXXXXX
Mod Port Model Serial # Versions
--- ---- ------------------- ----------- --------------------------------------
1 2 WS-X6K-SUP1A-2GE SADXXXXXXXX Hw : 1.0
Fw : 5.2(1)
Fw1: 5.4(2)
Sw : 8.2(2)
Sw1: 8.2(2)
WS-F6K-PFC SADXXXXXXXX Hw : 1.0
Sw :
WS-X6K-SUP1A-2GE SADXXXXXXXX Hw : 1.0