Problem on uploading on Arduino UNO

Hi,
I have just bought an Arduino starter kit, with Arduino Uno inside. While doing the first passages, the blink confirm, it doesn't make me upload the example code on the Uno. I am using it on a MacBook.
I can't understand the problems, so if you could help me I would be very grateful.

Andrea

The problems shown are:

chmod: Unable to change file mode on /private/var/folders/g9/lmry49b10471dsldv__8xm400000gn/T/AppTranslocation/510D70AC-2BC8-4D08-AE22-769FA5A697BE/d/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude_bin: Read-only file system
/private/var/folders/g9/lmry49b10471dsldv__8xm400000gn/T/AppTranslocation/510D70AC-2BC8-4D08-AE22-769FA5A697BE/d/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude: line 6: /private/var/folders/g9/lmry49b10471dsldv__8xm400000gn/T/AppTranslocation/510D70AC-2BC8-4D08-AE22-769FA5A697BE/d/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude_bin: Permission denied
/private/var/folders/g9/lmry49b10471dsldv__8xm400000gn/T/AppTranslocation/510D70AC-2BC8-4D08-AE22-769FA5A697BE/d/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude: line 6: exec: /private/var/folders/g9/lmry49b10471dsldv__8xm400000gn/T/AppTranslocation/510D70AC-2BC8-4D08-AE22-769FA5A697BE/d/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude_bin: cannot execute: Undefined error: 0