Sat down this evening to practice.... and have spent the evening trying to "fix" the app on my I-pad! then I tried it with my I-phone and it dawned on me. the app isn't working with ios 9. So I came on the forum and sure enough there are many very frustrated guitarists out there. Now I am a hobby musician so while its a pain, it's not costing me (apart from having bought an amp that does not do what I expect it to) but what about all the pro guys out there who are depending on their rigs! Come on Line 6 you need to sort this ...FAST! I am already looking for another (more conventional) amp and it won't be from the line 6 store if this if not fixed pretty quick.