Default MOTO G

Hi guys i'm trying to install CyanogenMod on my moto.

I typed in the command ADB DEVICES attached working ok then i type ADB PUSH cm-11-20140405-SNAPSHOT-M5-falcon.zip /sdcard/ But it says ERROR DEVICE NOT FOUND

Also on my phone its says connected then after ADB PUSH disconnected

Any ideas as to what is going wrong?

Thank you