I'll add a couple of info from the logcat, maybe this could help you to help me ;) By looking for chatsecure into the logcat, I've got: W/ActivityManager( 379): No content provider found for permission revoke: file:///data/local/tmp/chatsecure-latest.apk W/ActivityManager( 379): No content provider found for permission revoke: file:///data/local/tmp/chatsecure-latest.apk I/ChatSecure( 1719): no chatsecure.properties available By looking for guardian, I've got: E/WindowManager( 379): Starting window AppWindowToken{b21b4358 token=Token{b23072e0 ActivityRecord{b22594f8 u0 info.guardianproject.otr.app.im/.app.WelcomeActivity t5}}} timed out I/MemorizingTrustManager( 1719): getAppKeyStore(/data/data/info.guardianproject.otr.app.im/app_KeyStore/KeyStore.bks) - file does not exist The chatsecure UI does not provide any error message. Any suggestion? Thanks in advance, M