It is weird - I downloaded the All-in-one remote app on my Samsung mobile Note II the other day and connected with my new HP Deskjet 2540 printer. It worked well and I was so happy about it. However, when I tried again today, it didn't work and keep on saying : Printing error, unable to use this print option. I tried so many times, it kept on giving me this message. But when I uninstalled it and installed another app, HP ePrint, it works ok. How come? Actually I really like the All-in-one app more than the just ePrint app, can anyone help me to solve this problem?