When I try to retrieve the lesson files I downloaded to the organizer I keep getting file is damaged or in format cannot be included in elemants org.
What OS and version of Elements are you using?
Where did you get the files from? What format are they? Can you upload a sample here.
You haven't told us which version of Elements you are using, nor what format the files are. If you are using a newer version of Elements, the Organizer will not import pdf files. Please post a link to the website where you got the files if it is publicly available. Otherwise, please attach a sample here.
The site you linked is only for purchasers of the book who have an account. So, please attach one of the files to a post on the forum. You cannot do it by email. And you may have to make a post, then edit it by clicking on the . . . More button below your post. You will then have an opportunity to attach a file.