Somewhere between 3.5 and 4.0 the devs created a DSP rom to be used with Dolphin. You must be using the version before it was added, or grab the DSP from 4.0 and use that (I think that should work)
As for the 4.0-1038, you're getting an issue from having outdated drivers on your Mac. Upgrade to OSX 10.9
As for the 4.0-1038, you're getting an issue from having outdated drivers on your Mac. Upgrade to OSX 10.9

