While installing the Android application, I encountered this issue (Parse Error : There is a problem parsing the package.). I took the subsequent actions.
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My first installation of the program went smoothly. 
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I updated the version number in the manifest file and made adjustments to the currently running application. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.openintents.samples.BasicOpenARDemo" android:versionCode="2" android:versionName="1.0.1">
 
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I export the application after which I complete the code signing step. To export, right-click your project node and select an item. You'll find a wizard there. Complete the code signing while following the steps. 
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I downloaded the ARDemo.apk file and renamed it to ARDemo1.apk. 
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After moving this apk file to my phone's SD card and starting the installation, I encountered the aforementioned issue. 
I looked it up online, and they claim there is a manifest file unpacking issue.
Can someone please explain what might be wrong with my procedure?