Laura,
OK — so we went and deleted all products and categories in order to do a new, fresh import.
We updated the /wp-content/uploads folder permissions to 777 ( as well as /uploads/woocommerce-uploads )
Then we re-ran the import of the demo_woocommerce.xml — ending with the same result.
I have included a screenshot of the 1st page of failure notices.
Please login here and let us know if you are able to help us get this final step of the full Setup / Demo data import completed. You’ll need to empty out the WooCommerce products data again — that’s fine.
http://nextlevel-seo.net/dev/sweet-date/wp-admin/
User: SeventhQueen
Pass: S3tup!2015
FTP Server: http://ftp.nextlevel-seo.net
Username: SeventhQueen@nextlevel-seo.net
Password: S3tup!2015
Thank You!