JimG

Yes, it's hard locking.

Yes, it does. Here's the text from System Profiler: ATI Radeon X1600: Chipset Model: ATY,RadeonX1600 Type: GPU Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 256 MB Vendor: ATI (0x1002) Device ID: 0x71c5 Revision ID: 0x0000 ROM Revision: 113-xxxxxx-158 EFI Driver Version: 01.00.158 Displays: DELL 2005FPW: Resolution: 1680 x 1050 @ 60 Hz Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Rotation: Supported Display Connector: Status: No Display Connected

Phil, I, too, have a slightly older MacBook Pro (model identifier: MacBookPro2,1), but mine is a 17" model, with a 2.33MHz processor, 3GB RAM, and 256MB of VRAM. I tried the demo and got the exact same black-screen crash upon hitting the Play button from the scenario screen. I downloaded and ran the app from my admin account. Just thought I'd chime in as another data point. Hopefully you'll be able to get us MBP folks up and running (with at least rudimentary water perhaps?).