Hi everybody,
I am writing regarding following issue (http://project-gc.com/qa/?qa=3679/enter-key-is-not-recognized-when-i-press-it-to-create-a-map)
So the issue is, when I am (for example) in the "Top Favorite Caches" and I want to create a map with the first 30 caches list ("Create a map" and I enter manually 30) and hit Enter on my keyboard, and I get back to the "Top Favorite Caches" site, without a map!.
But it works when I click with my mouse on "Create map" instead of hitting Enter on my keyboard. 
I have this issue also in my webpage (which is programmed in Bootstrap, like this one I guess?). I have fixed it writing following code:
<form onKeypress="if(event.keyCode == 13) event.returnValue = false;">
This code ignores the "Enter" key, so you have to click on the "Create map" button with the mouse.
Maybe you can have a try with this code 
Thanks,
Best regards,
Daniel