My antivirus (Kaspersky) detected and blocked a trojan when I tried to check out today, labeled: https://www.renderosity.com/library/src/AWS/Logs/old/jquery.js

Kaspersky can be a bit persnickety, blocking anything it thinks might be a problem. Not sure if that's what happened, or if there really is a trojan on the page, but I didn't check out just in case.