emails sent are displayed 2 times

I have version 7.0.2613 . since then, I 've made this update are in the folder send all sent mails , duplicate  of the sendet mails always 2 times the same mail .
i Have a email adress, and sending a email direkt from by browser it is working fine (mails only showing one time in the folder sendet) after syncronising eM Client the sendet mail is then also only once there,Then… if i sending a new mail from Em Client direkt it is two times in the Folder! bevor my update in version 6. x everithing was working fine, and i have never change my account settings,
cane anybode help please…