You have posted in the wrong forum since your state program is Photoshop Elements 8. You have posted in the Adobe Premiere Elements Forum (video editing) and not the Adobe Photoshop Elements Forum.
Please repost your thread in the Adobe Photoshop Elements Forum
or otherwise you will have to wait for a moderator to see your thread here and then move it from here to there.
Until you get to the Adobe Photoshop Elements Forum, please take a look at the following thread to see if it contains any Mac related answers for you in what appears to be a licensing issue.