I have a Samsung galaxy not4 with OTG cable and both apps, KX3companion and kx2 keyapp. Whichever I start first is they one that will connect to the kx3, the other will give "Error opening USB port." Andrea mentioned about being able to run them together but it is either me or the note4 with an issue.
Ciao Steve, yes I've been able to run it together on my Nexus 7. I'll try to replicate the issue on other devices and see why this happens and eventually try to modify the code to implement a seamless integration into the next updates. Please keep me updated if you find something more. Thanks. 72/73 Andrea IU4APC
Ok there is progress, I was using kitkat 4.4.4 and tmobile Finally updated to lollipop 5.0.1. Once I updated and restoreded my programs it is able to go back and forth. It still asks to use the usb port upon switching. But its working.