I have this problem with some applications that I theme. After opening/editing I re-sign the apk. Install no problems, place widget on homescreen. After a little while, it varies, I'll get a widget display error. And when I go to re-add the widget its completely missing from my list of widgets. The application is still there and working properly, but the widget isn't. tell me if I'm should I zipalign the apk after signing or something else? Is this a problem with BB or is it my own?