title: TestFlight fails to install app and cannot delete partially installed app
body: <p>I have an iOS app I am deploying via TestFlight.  The app installs fine on an iPad 1 running iOS 5.1.1.  The app will not install on my iPhone 4 running iOS 6.0.  Both devices are included in the provisioning file.  The app runs fine in the 5.1 and 6.0 simulator.</p>
  
  <p>When I try to install the app to my iPhone 4, I get the following screen:</p>
  
  <p><img src="https://i.stack.imgur.com/WSFbg.jpg" alt="enter image description here"></p>
  
  <p><strong>In addition</strong>, I cannot delete the partially downloaded app (it's there in the lower right hand portion of the home screen).  I've tried restarting the device and resetting the device without success.</p>
  
  <p>Here is the console output I get from the phone when I hit Retry (stuff in &lt;&lt;>> is redacted):</p>
  
  <pre><code>Oct  1 20:35:10 &lt;&lt;my device name&gt;&gt; SpringBoard[67] &lt;Warning&gt;: Killing &lt;&lt;bundleID&gt;&gt; for app installation
  Oct  1 20:35:10 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 handle_install: Install of "/var/mobile/Media/Downloads/-2645453250453581032/5351851639508112860" requested by itunesstored
  Oct  1 20:35:12 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 MobileInstallationInstall_Server: Installing app &lt;&lt;bundleID&gt;&gt;
  Oct  1 20:35:12 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: Oct  1 20:35:12  SecTrustEvaluate  [leaf CriticalExtensions IssuerCommonName]
  Oct  1 20:35:13 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 verify_signer_identity: MISValidateSignatureAndCopyInfo failed for /var/tmp/install_staging.Axitjn/foo_extracted/Payload/&lt;&lt;app&gt;&gt;.app/&lt;&lt;executable&gt;&gt;: 0xe8008017
  Oct  1 20:35:13 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 do_preflight_verification: Could not verify executable at /var/tmp/install_staging.Axitjn/foo_extracted/Payload/&lt;&lt;app&gt;&gt;.app
  Oct  1 20:35:13 &lt;&lt;my device name&gt;&gt; itunesstored[66] &lt;Error&gt;: 0x2ffc6000 MobileInstallationInstall: failed with -1
  Oct  1 20:35:13 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 install_application: Could not preflight application install
  Oct  1 20:35:13 &lt;&lt;my device name&gt;&gt; installd[31] &lt;Error&gt;: 0x2ffd8000 handle_install: API failed
  </code></pre>
  
  <p><strong>Update</strong></p>
  
  <p>The app installs fine on another iPhone 4 running iOS 6.</p>
  
  <p><strong>Update</strong></p>
  
  <p>Similar problem here: <a href="https://stackoverflow.com/questions/9919618/how-to-force-removing-of-an-app-from-an-idevice">How to force removing of an app from an iDevice</a></p>