My device is Line 6 POD HD500 connected to Macbook air with OS X 10.9. Every time when i start Line 6 Monkey I get the windows that notify me that my device is not register in my line 6 account but this is not true. My POD HD 500 is registered before more than 1 year. I try to remove the device and register again, but problem is still present.
I had no this problem before upgrade to OS X 10.9