DVD Studio Pro 3.x requires a computer with an AGP video card. PowerMac G5 (Late 2005) models (released October 19, 2005) and iMac G5 (iSight) models feature newer PCI Express video cards. Because of this, DVD Studio Pro 3.x is not supported on these computers and if you install it you may encounter unexpected behavior.
For instance, on Quad processor models, if you try to import MPEG-2 assets DVD Studio Pro will unexpectedly quit. This does not occur with DVD Studio Pro 4.x.
If you need to use DVD Studio Pro on Power Mac G5 (Late 2005) or iMac G5 (iSight) computers you'll need to purchase Final Cut Studio.
For More information on Final Cut Studio click here.
302826: "Compressor 1.X not compatible with Power Mac G5 (Late 2005) or iMac G5 (iSight)"
302667: "Final Cut Pro 4.5 HD and earlier not supported on Power Mac G5 (Late 2005) or iMac G5 (iSight)"