I am having trouble setting up my HD500. After installing Line 6 Monkey and POD HD500 Edit, I can only open one custom tone without having to exit the program. If I try to open another custom tone, after the first one, I get a warning that says "Another instance of Line 6 POD HD500 Edit is currently running" and won't open the next tone(I'll attach a pic of the warning).To open another tone, I have to completely exit the HD500 Edit program and restart it. What is wrong and how do I fix it?