sounds like a PICNIC error imo
I don't understand even what a picnic error is, but I have the same problem. I've used Windows Live on my current computer, the one before and I think the one before that. This is a PC, Windows 7, 64 bit. My browser is Chrome. Never once no matter how much stored mail I had, did the program refuse to send. Two days ago it stopped sending. I have a number of email addresses listed in Windows Live, and of course I can go to Comcast.net to send email from there, to g.mail.com and so on, but it is less convenient. If anyone has a solution, I would appreciate in addition to posting, if you could cc me at firstname.lastname@example.org. I did get a recent email on my Hotmail account saying that inbox was going to be automatically upgraded to outlook.com. Is that the problem? I almost never used hotmail.