title: android 'app not installed' error. how to debug?
body: <p>i have developed an app in eclipse, so today i made an apk (made the keystore and all that)</p>
  
  <p>i put it on my website and downloaded it to my samsung GT7300 running 4.0.4 and it installs and runs fine.</p>
  
  <p>now i just tried to install on my no name Chinese tablet running 4.2.2 and i get 'app not installed' every time.</p>
  
  <p>i enabled unknown source of course, is there anything else i could have missed?</p>
  
  <p>when i get the 'app not installed' message, there is no explanation of any kind. is there an installer log or something where i can find the problem?</p>
  
  <p>if anyone would care to try install for me, its at 
  <a href="http://www.2112design.com/fbmstools/" rel="noreferrer">http://www.2112design.com/fbmstools/</a> and the file is fbms_lmfd.apk</p>
  
  <p>maybe i'm no supposed to post that, don't know</p>
  
  <p>thanks for any help, this is driving me nuts!</p>
  
  <p>by the way, i read this <a href="https://stackoverflow.com/questions/4226132/application-not-installed-error-on-android">&#39;App not Installed&#39; Error on Android</a> and non of those suggestions helped</p>
  
  <p>i connected the debug cable to the device and it installs and runs fine through adb.</p>
  
  <p>so i created a blank application and made an apk and put on my website, then download to tablet and it installs fine. so i guess there is something wrong with my real app, but the manifests are basically the same.</p>
  
  <pre><code>android:versionCode="1"
  android:versionName="1.0" &gt;
  
  &lt;uses-sdk
      android:minSdkVersion="14"
      android:targetSdkVersion="15" /&gt;
  </code></pre>
  
  <p>so i installed a logcat view on the tablet, and when i try install from the apk i get a couple of error messages</p>
  
  <p>Package ..... has no certificates at entry AndroidManifest.xml: ignoring</p>
  
  <p>then</p>
  
  <p>Installation error code: -103</p>