Yes, it's a bug. I think it's fixed in the CVS repository. I jumped the gun, making a "release" of 0.99.01. I think we're fairly close to a release that actually works... (famous last words...)
If you don't need 64-bit support, stick with 0.98.39 for now, or if you need the "-f macho" support, get 0.98.40 from Apple.
I know 64-bit support has been a long time coming. Thank you for your patience. Keep it up! :)
Best,
Frank