[G4] Newbie: iLife won't install (OS 10.3.9) issue...Help!?

[Anthony Kluck]

Hi everyone,

New to the list here, and have a question:

I just upgraded to OSX (v. 10.3.9 after doing Software Upgrade today, 
including all available software upgrades from Apple site), and am 
trying to install the iLife '04 program I bought as part of a "buy 
both" promotion when I picked up OS X a couple months ago.

I am running OSX on an AGP G4, dual 450 processor Mac with a built-in 
DVD ROM.

When I click the installer for iLife, the installer runs a check to see 
whether the program can be installed on the machine and comes back with 
a message to say that it can't install the programs on the disc because 
(it says) I am running either iPhoto, iTunes, iDVD, or GarageBand, etc. 
This is NOT the case, however -- I have quite out of all programs; the 
only thing open is the Finder.

Does anyone know why this is happening? Can anyone supply a fix or 
workaround?

Thanks!!!
Tony