An error occurred

Each time I start the program I get an error windows. Among the several lines in Register page, the most relevat seems to be this one  “12:56:34   System.NullReferenceException: Riferimento a un oggetto non impostato su un’istanza di oggetto.”
After that the program seems to work fine.  
Can you help me in removing such an error?

Hello Mario,

Could you please post a screenshot of the error and copy the whole content of the ‘Log’ tab here? Can you please also tell us what version of eM Client are you using (Menu -> Help -> About)?

Thank you,