Today, Native-Instruments has finally released an update to Battery 3 (taking it to 3.0.6) which makes it compatible with ProTools 7.4.2 and 8 as well as Vista 64bit for Windows users. There are bug and graphical fixes. You can install this free update using your NI Service Center application.
I recently updated one of my systems to Leopard and ProTools HD 8 and one of the first problems I encountered was a nagging CPU error. I could load a blank project and create one single instrument track, place one RTAS instrument on it and get an error within 3 to 13 seconds of hitting play. This is without any midi data on the track, without playing a single note, without any automation, without any other apps running.
I had a request to post a tip on creating shouts so here it is. This video uses ProTools 8 but everything applies to previous versions as well (except the expanded playlist feature). If you have any tricks to add or have questions please comment below.