In the latest updates of Chrome and/or extensions, a deprecated Javascript functionality we still use causes the screener to freeze up, and probably other parts of Research.
We will be fixing this ASAP, but for the moment the only workaround is disabling the extension blocking the Javascript. At the moment we identified just McAfee WebAdvisor extension. There may be others, please let us know.
Another workaround is to use a different browser.
It may take a few days to fix this.
Sorry about this.