Problem uploading to board

My sketch takes longer when am uploading to my Arduino Leonardo. And only gives me error after finally loading.
The error reads:
Found programmer: Id = "BŸÞ"; type =
Software Version = . ; Hardware Version= .
avrdude: error: buffered memory access not supported. Maybe isn't
a butterfly/AVR109 but AVR910 device?

Please help me to correct this.

Thank you

Maybe some basic checks: 1) did you select the right board under Tools → Boards? 2) Did you select the right serial port? 3) Did you change anything from the Programmer menu?