Unfortunately that is too old and no longer compatible with the current way the cloud lightroom is set up. To get the raw files, you can either use the downloader Johan refers to or go to https://lightroom.adobe.com , log in, and select a file you want the raw from. Then hit the download button and select "original". This will download the original raw file. Unfortunately this is a one-by-one deal. If you want a bunch, use the downloader.