How to transfer imovie '09 projects between machines?

Question

I was working on a project on my Air when on vacation and now can't move it back to my MacPro at home. I have tried the obvious and can get it to my desktop but the project is always greyed out when I try to import it.
Perhaps I'm missing something simple as I haven't used i movie much (using Final Cut Express on my MacPro.

Answer 1

Here is the HELP text: If this does not help you, see my next post for a workaround.
Copying or moving a project to an external hard disk
You can copy or move your video projects to a compatible external hard disk connected to your computer using a USB or FireWire cable.
Moving or copying projects is useful if you want to work on a project using another computer. You can connect a hard disk containing a project to another computer that has iMovie ‘09, and then work on the project on that computer.
Moving projects can also be useful if you want to save space on your computer’s hard disk.
To copy or move a project to another hard disk:
Connect a compatible external hard disk drive to your computer using a FireWire or USB 2.0 cable.
A hard disk icon appears in the Project Library.
NOTE:When using an external hard disk with iMovie, make sure it has been formatted as Mac OS Extended (Journaled).
Select the project that you want to move or copy, and then do one of the following:
To copy the project, drag it to the icon of the hard disk where you want to copy it, and then choose “Copy project” or “Copy project and events.”
If you choose “Copy project,” none of the project’s video or other media is copied to the other disk. To edit the project, the computer you’re using must be connected to the hard disk that contains the media.
If you choose “Copy project and events,” the Events are copied to the other disk.
Either way, a copy of the Events remains in the original location, and any other projects using clips from those Events still refer to them at their original location.
To move the project, hold down the Command key as you drag the project to the icon of the hard disk where you want to copy it, and then choose “Move project” or “Move project and events.”
If you choose “Move project,” none of the project’s video or other media is copied to the other disk. To edit the project, the computer you’re using must be connected to the hard disk that contains the media.
If you choose “Move project and events,” the project and the Events used in the project are moved and deleted from their original location. Any other projects using clips from those Events refer to them at their new location.
If you’re moving a large amount of video at once, this process may take several minutes.
You can also move or copy Events to an external hard disk.
You can also quickly consolidate all the media used in a project onto the same disk as the project. This makes it easy to collect a complete project onto one disk that you can then edit from any computer using iMove ‘09.