This is for a live game that has a significant amount of traffic. Its featured in your gallery.
The first question should be, is this is a harmless debug message or it means those users can't use the app as it is now. Which is it? That was the question I asked you. Can I get the answer? You will need to ask a developer on the team about the error message.
I don't know if it's happening for 3.0. As I said, this didn't seem to occur in our tests prior to launch. So...even if I tried it on 287 in some controlled test...I don't expect it to happen.
Can I reproduce it in one your samples? I could authorize the resources to do that work, but first you need to answer the question I asked. Obviously if it's a harmless thing...then we don't do that work. I don't see a ton of 1 star ratings, so I assume it's harmless...but i'm trying to find out.
Which tracker am I using? It's a standard ImageTarget setup. Pretty much exactly like your most typical example. But the app also has a UDT feature, which is a little more exotic. Since the error message is so vague...it's difficult to know what is happening. It could be related to one or the other or both. Again..you need to ask the dev what it means.
The bit about the camera start order and datasets...all of that stuff is setup correctly. What's interesting though is that I also see error messages about failed to load xyz dataset..but it's setup correctly and does load in our tests (and obviously many people are using the app). I also see a message "An invalid object handle was used."...sounds related.
Again, I'm hoping what vuforia is doing, is just occasionally failing to start because of some timing issue, and just tries again...ie harmless. Please let me know the answer to that very important and primary question.