I'm getting a bunch of crashes at the native thread when I open a list of documents, read each page and then close the Page and document, all of this using Asynchronous threads running sequentially. Sometime it works but in average, it crashes 1 out of 5 times. I can't share my source code, but I can tell that I'm using an Asus 10" tablet (with Intel processor) running Android 4.3, and I'm using the latest stable PDF library (3.4). I would appreciate any help.