Using Arduino IDE 1.6.6 2015/10/28 05:06 with Windows 7 64 bit The duplicate library located in the Arduino IDE install folder is now used instead of the one in the sketchbook/libraries folder. - copy arduino-nightly/libraries/Servo to sketchbook/libraries - Open IDE - File > Examples > Servo > Knob - Verify - the multiple libraries warning is: ``` Multiple libraries were found for "Servo.h" Used: C:\Program Files (x86)\arduino-nightly\libraries\Servo Not used: E:\Stuff\arduino\libraries\Servo ``` If I repeat this process with Arduino IDE 1.6.6 2015/10/26 06:42 the warning is: ``` Multiple libraries were found for "Servo.h" Used: E:\Stuff\arduino\libraries\Servo Not used: C:\Program Files (x86)\arduino-nightly\libraries\Servo ```