Click eventlistener causes crash when clicking multiple views at once

I'm currently working on an iPad app with multiple views within a window that when clicked will open up a new window within a navgroup. The problem I'm having is that if I click 2 or more of those views on the device at almost the same time (multitouch) it is crashing hard out of the app.

Is there any way I can stop it from catching those other click events -- or ignore them? I've tried setting a boolean flag, moving the click event to the parent view, but nothing seems to help.

Code looks something like:

function showNext(e) {
   if(!alreadyOpened) { // this doesn't seem to work
       navGroup.open(Details.mainWindow,{animated:true});   
       alreadyOpened = true;
   }
}
 
myView.addEventListener('click', showNext);