Durangi's dashboard

It's an iPod touch 2G, although it is jailbroken, I assure that I payed for all three apps (except for Single of course), in fact RJDJ was the original reason I got my device. But I doubt it is due to my device being jailbroken, as the apps worked just fine on 2.2.1 firmware when it was jailbroken and I tested the apps before I applied the 3.0 jailbreak, as they would not work on 3.0 betas and I had the same problem. My device has no faults, which I know of at least and the RJDJ apps all worked on 2.2.1 and lower for me. If this will help you in any way, I'm glad to have provided this information to you and thank you for replying to my problem.
P.S. I apologise for the mis-spelling of 'compatibility' in the original problem report, I was trying to save time by letting my device spell 'compatible' and simply changing it to compatibility, which I should have paid more attention to.