I downloaded uqm-0.6.2-psp_rev002.zip and copied the UQM directory to my PSP as instructed. I also added the following package files to the packages directory:
uqm-0.6.0-content.uqm
uqm-0.6.0-3domusic.uqm
uqm-0.6.0-voice.uqm

I also edited the version file as mentioned in a recent post:

in PSP\GAME\UQM\CONTENT there was: 0.5.0
I changed it to: 0.6.0

When I try to run the game I get the error:
This game cannot be started. The data is corrupted.

I am running PSP OS version 5.03.

Can anyone suggest ways I can make the game work?

Thanks
Nethog