So I've been trying to get things rolling on my new MacBook pro, and for the most part, the essentials are there. Sibelius and VDL2 are playing well together, but no matter what I do I can't get VDL2 to show up anywhere in Garageband or AU lab.
Your MacBook Pro is an intel mac. Currently, VDL2 isn't universal, so you'll have to wait for that version before being able to do this. Either that, or force your Universal programs (garage band) to launch using Rosetta. If you launch using Rosetta you should be able to see the installed plugin.
The universal version is coming, so hang in there, and thanks for your patience! :)