Encrypted Magic Folders 05.01.1 Can You Help Me Resolve This Pop-up?

Can you help me resolve this pop-up? - encrypted magic folders 05.01.1

"Unable to create an encrypted connection because cdertificate construct presented by www.yourmusic.com that has an invalid signature. "

These pop-up occurs on multiple sites with my laptop. I can not link to sites not connect - then get these pop-up. MSXP OS, with the Network Magic Network has been installed without encryption surf Anonymizer. Thank you.