I was using wptouch 3.1.9, on wordpress 3.8.2, with latest version of total cache + google pagespeed. Everything was fine back then.
So today wordpress released version 3.9, so I took the chance upgrading wordpress and wptouch to the latest version. Since then, wptouch not working anymore. When I open on mobile browser, it shows black white page. Even the source code is empty.
While opening desktop theme is just fine.
I have checked all the rejected user agent field. Yet problem couldn't be solved.
I would like to ask what could have happened to wptouch returning a blank page?