Hi. Baffled. I have tried to save IMovie projects to ext HD. The icons appear on the HD but when I click on them (on the HD) nothing happens. Last night, when i tried to save to ext HD at the end of a project, it said that the HD was either locked, full, or something else I've forgotten now. My Missing Manual makes no mention of this problem. I have checked its format - it is MAC formatted.

Thanks...Jennifer