Attention.playTone(TONE_START) causes a System Error on Venu 3 when overlapping with system notifications.

I mean..... that makes almost as much sense as correlating it with any other imaginary event. User stopped for toilette could be just as much the reason. 

I don't know that it happened. But looking at the other possibilities, this is the only one that is plausible.

How do you know it happened at the same moment? How do you reproduce it? 

What I mean is that my app tries to play the tone in the same moment as a notification arrives, which also plays a tone. There is then apparently a conflict about using the same resource, and, instead of solving the conflict, a System Error is thrown.

what do you mean by overlapping? There's only 1 thread in CIQ apps.