Dear sir/madam, When I want to file an E-mail I get the following message: Warning! It is not succeded to file this message. Check your filename and try later. This is strange. I use thunderbird for many years. My imporant E-mails I always file in the directory of my client. E.g. the directory Smith: the E-mail wil be filed as: 01) 18-aug-14 Confermation order Recently I upgraded my computer from Ubuntu 12.01 to 14.04. Mayby there is the problem, I dont't know. I hope someone can help me out. Thank you beforehand. Kindly Regards Gerlof Brinck.