HELP! Cant Instal Lego Mindstorms sOftware on iMac with Lion

[lizard381]

Snow Leopard defaults to a 32-bit kernel in most cases, except for newer Macs which can boot to 64-bit (but you have to explicitly enable this).
The ones I have can't boot into a 64-bit Snow Leopard kernel due to EFI issues.

You need to run the Snow Leopard Kernel in 32-bit due to the Fantom drivers being 32-bit only.
I don't know if Lion will default to 64-bit kernels on my existing machines since I have not upgraded.
However, if you're running Lion, you'll need to boot in 32-bit for now until new Fantom drivers are released which support 64-bit kernels.

Oh I understand what you're saying. Yea I think it depends on how new the machine is rather than OS, but I'm not certain since I haven't played with Lion yet. However you can check fairly easy to see if your machine is using the 32-bit kernel or the 64-bit kernel. This article http://support.apple.com/kb/ht3773 was written for Snow Leopard, hopefully it will carry over for Lion. If your machine is using the 64-bit kernel, trying booting with the 32-bit kernel and see if Lego's software works.