Garageband and sonicboombox

Dear Friends, I'm having trouble with Ultimate Sound Bank's boombox programs. I just tried to install the ethnicboombox, and I get the following error message:

EthnicBoomBox cannot be installed on this computer. Could not find specified message for index 18

So, I've had problems with all three boomboxes.

sonicboombox's instruments installed fine, but none of the loops show up.
classicalboombox's instruments installed, and the loops installed fine.
ethnicboombox's loops show up, but the instruments will not install.
The Graphic Interface does not show up at all.

I am running Garageband 2.0.2 on a 1.33 GHz Macintosh G4 laptop with 1.5G Ram.

Thanks for any help you can supply!
Sincerely,
John thomas Oaks