yahoo won't open msgs--Err15.
Site suddenly stopped loading emails. I followed all directions on yahoo's non-help "help" page. Followed browser (Firefox) directions, including deleting Library>App Support>Firefox>Profiles>permissions.sqlite, and more attempts, for hours. I can access yahoo home page, "news..." page, other websites. It's not the browser's fault. Same results when attempted the same in Safari. So, it's not the browser, it's not the computer; it is, once again, yahoo's fault. How do I fix this latest fail?

Hi there,
Could you please message us on Twitter at @YahooCare or on Facebook at Yahoo Customer Care? We'd like to look more into the issue you're experiencing. In case you do not have a social media account, we are also available at: help.yahoo.com
Looking forward to your reply!
Thank you,
Yahoo team