Devilbiss humidifier tray leaking:HELP!

I opened my humidifier tray to wash it and now it is leaking if I fill it more than 1/2 full. Any feedback would be appreciated.
Thanks.

The same thing happened to me - but it was only leaking because I'd put it back wrong in the first place and had to fiddle around a couple of times to get it right... try it first without water a few times til you're sure it's absolutely level and in place... isn't it slightly off kilter as it is now?

Another thing... my machine kept starting and then stopping within 1-2 mins. when even a tiny bit of water had gotten in or onto it from wherever (even if it seems there's no way it could affect the mechanics inside) so I had to let it dry out for a day (on 2 separate occasions!) and then it was fine... not the best humidifier design to say the least, especially with the waffley little boxy parts!