Hi folks, great job the release of A4! I've updated my webapp today but i'm getting some errors while changing pages. Some of my pages wont load and the loading screen with spinner keeps spinning, nothing is happening. I've listed the error below, any idea?

1. 1. Uncaught TypeError: Cannot call method 'replace' of undefined
   1. a.mobile.changePage.a.ajax.success jquery.mobile-1.0a4.min.js:59
   2. d.d.extend.each jquery-1.5.2.min.js:16
   3. d.d.fn.d.each jquery-1.5.2.min.js:16
   4. a.mobile.changePage.a.ajax.success jquery-1.5.2.min.js
   5. d.extend._Deferred.f.resolveWith jquery-1.5.2.min.js:16
   6. v jquery-1.5.2.min.js:16
   7. d.support.ajax.d.ajaxTransport.send.c jquery-1.5.2.min.js:16