Postby Chad » Fri Mar 28, 2014 5:21 pm
I can think of a few ways this can happen. These might sound odd, but sometimes things could happen by mistake.
First off, I noticed you said "axes", which means you have multiple axes triggering the event. Check the event and make sure the layer isn't set to be toggled, because that may cause hitting two axes to show the layer and then immediately hide it again (if the axes aren't already set to be hidden).
Another possibility is that despite being active, the layer isn't truly "on". On rare occasions, I've noticed that unchecking/checking a layer can make it not show/hide properly. This is of course fixable by simply hitting the checkbox again, but it's worth trying if any of the above don't work.
Also, is there a chance you may have attempted to delete the layer at an earlier point? Sometimes attempting to do so will just delete the objects on it rather than the layer itself.
If nothing else, thoroughly check every bit of it to make sure nothing's amiss. Make sure the axes are set to trigger the event that shows the layer, make sure the event actually shows it (and as Emral said, hiding the axes if you're not already doing that), make sure any connected events are triggered properly, stuff like that. It can be easy to miss the slightest detail that makes the whole thing not work.