App store submission error Invalid Bundle Structure
<p>I am receiving the following error from XCode 8.1 when trying to submit a previously successful submitted app version upgrade:</p>

<blockquote>
  <p>ERROR ITMS-90171: "Invalid Bundle Structure - The binary file 'Particle.app/Particle_armv7' is not permitted. Your app can’t contain standalone executables or libraries, other than the CFBundleExecutable of supported bundles. Refer to the Bundle Programming Guide at <a href="https://developer.apple.com/go/?id=bundle-structure" rel="nofollow noreferrer">https://developer.apple.com/go/?id=bundle-structure</a> for information on the iOS app bundle structure."<br>
  ERROR ITMS-90171: "Invalid Bundle Structure - The binary file 'Particle.app/Particle_armv7' is not permitted. Your app can’t contain standalone executables or libraries, other than the CFBundleExecutable of supported bundles. Refer to the Bundle Programming Guide at <a href="https://developer.apple.com/go/?id=bundle-structure" rel="nofollow noreferrer">https://developer.apple.com/go/?id=bundle-structure</a> for information on the iOS app bundle structure."</p>
</blockquote>

<p>I did not modify anything in regards to architectures this build.
Any idea where I should look to solve this problem?</p>