Anyone know what this alert means?

I have been getting this alert after my game runs for a few minutes. I don't reference IIDs in my coding, only UIDs. Thanks, Morgan.

Do you use "pick nth instance"? I think I've seen it before, but I forgot what was causing it. I'll see if I can reproduce it.

Edit:

I can't seem to reproduce it. :/

R0J0hound - no but I do use "pick by comparison" a lot.

I have some time. If you post or pm your capx I can try to isolate the cause.

I had the same issue pop up when using a Sprite object with two Array objects in a container. Attempting to Pick by Comparison the second Array (based on a shared tag variable) gave me that same error. Picking the first Array gave no error. My attempt to reproduce it under similar conditions in another .capx failed, unfortunately. I eventually got around it by simply creating a separate Array whenever a new Sprite was created and using the same shared tag for them. Weirdly, even with the error message, the Array was still picked correctly and the code otherwise executed without issue.

Ancillary - I don't use any arrays and, yes, I find that after I close the error window, the game keeps playing correctly. I do use many Spriter objects in my game so I'm wondering if they might be involved. I understand that IIDs are generated automatically so it does make me wonder what the problem is. R0J0hound - thank you. If I can get my google drive to work, I'll PM you a link.

PSI

I tried your capx and couldn't get the error. Looking in C2's js files I'm not finding any way to narrow what the cause could be. That error can be triggered by the part that picks the other objects in a container and is used throughout the runtime and plugins.

R0J0hound - Thank you. I think the only containers I use are my spriter objects. The error must be there somewhere.

PSI - I managed to run across the bug again, and posted a pared-down .capx in the Bug Reports forum demonstrating it. I believe it has something to do with the Array object, as attempts to trigger the bug with a Sprite Text object, using a similar comparison, didn't produce an error.

Ancillary - I don't use any arrays so it must be something different in my project, eh?

Kyatric - Ashley - any idea what this error could mean?

It looks like a bug, and you'd need to make a report following all the guidelines to get it investigated.

I think it's the same bug as in ancillary's bug report. It has to do with the "pick by comparison" condition with an object in a container. I perused his capx a bit to see if it can be simplified, but I ran out of time.

https://www.scirra.com/forum/must-read-first-how-to-report-bugs_t61748

Yes, I have read that. As R0J0hound said, I think this bug has already been reported.