Welcome ArduinoDroid - Arduino IDE for Android

hi ive recently downloaded this app and purchased an otg cable,
I currently have a Samsung S5 running lollipop.
i have followed all the instructions to selecting the right board connected it up selected and compiled the blink sketch and went to upload the sketch to the arduino, but i get and end process error everytime,

Can anybody shed some light on this problem and help me out ?

Thanks in advance

Andy