Yahoo Negative Vibes: TB 15.0.1 (Mac) Webmail 1.5.0. Webmail Yahoo 1.5.7

[vt]

Error console shows:

HttpComms3.js: send : Exception : NS_ERROR_INVALID_POINTER.
Error message: Component returned failure code: 0x80004003 
(NS_ERROR_INVALID_POINTER) [nsIIOService.newChannelFromURI]
345

and

YahooPOPBETA.js: loginHandler : Exception : Error.
Error message: httpConnection returned false
299

I can log in through the browser.  Nothing has changed in TB, no updates, 
etc. All worked correctly yesterday. 

Thank you!