The only issue I can see is that the Google Play Application ID should be all numbers, it looks like you are using an AdMob ID here, that edit box is only for Google Play Games app IDs. AdMob settings are set inside the app with SetAdMobDetails. However using a similar value in an export here didn't cause any problems running the app, so it looks unrelated.
The error would suggest there is a problem reading the app icon from the APK, but if the export dialog can't find the image you specified it would display an error, so I assume the image is being found. If you remove the icon path does it work? If so does selecting a different image work?