FTDI problem on Mac OS 10.9.5

Hi all,

i was using Arduino uno on my Mac for a long without problem.

At the recent Maker Faire Rome we got a SparkFun Makers faire Badge (Hacking Your Maker Faire Badge - learn.sparkfun.com).

I'm trying to upload code from Arduine ide 1.0.5 ( and also 1.0.6) but without success.

I have tested MKFR board, FTDI board (funduino), cable on a Windows computer and I succeeded to upload the code.

I've also tried the solution proposed on this topic http://forum.arduino.cc/index.php?topic=198539.0

Unlikely this doesn't solve my problem.
When I try to upload the code the result is the following.

Binary sketch size: 4,158 bytes (of a 30,720 byte maximum)

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x00

avrdude: stk500_getparm(): (a) protocol error, expect=0x14, resp=0x00
avrdude: stk500_initialize(): (a) protocol error, expect=0x14, resp=0xe0
avrdude: initialization failed, rc=-1
         Double check connections and try again, or use -F to override
         this check.

avrdude: stk500_disable(): protocol error, expect=0x14, resp=0xe0

If I use the Arduino Uno I'm still able to upload the code.

Any idea how to fix it ?

Thnks for your help.

Fede