If you see this error warning on a page in the Ultimate Sims List, it means that The List tried to read a remote web page and failed because of a permissions error.
Please add a note to this thread about it. Please include the URL of the Ultimate Sims List page that generated the error. (If you have the Ultimate Sims List open in a separate window, you can just copy the URL from your web browser and paste it into your message.)
MEMO TO ME
To fix this problem, I need to enable remote file open for each script individually. Insert this at the top of the script.
// Allow remote file open for this script