Hello, @mschueller,
You have out of date files http://prntscr.com/fn5d9n. In this case, you need to delete “woocommerce” folder, which is located in wp-content/themes/royal/ and upload a new one from the latest theme archive.
Please note that before uploading theme files you need delete “woocommerce” folder, which is located in wp-content/themes/royal/ and it’ll be reuploaded from a new theme package (to avoid problems with old files).
Regards,
Rose Tyler.