IDE verify code to the end display Error compiling. The detail as below. I try many different version of IDE include 1.6.8,1.6.7,1.6.6,1.6.5 but all the same. OS is Win7 pro 64bit SP1.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-ar: unable to rename 'C:\Users\Jack\AppData\Local\Temp\buildc2e1356509484170193380e5c81075c3.tmp\core\core.a'; reason: File exists
exit status 1
Error compiling.