What do you mean by saying
wipe out the platforms/android project ? I've similar problem. I'm using phone gap build yet unable to use my App on Jelly bean version or below 4.3 version..
I've this in my config file
<preference name="android-minSdkVersion" value="14"/>
I changed the value to 10 yet no use!
If remove the code for platforms PhoneGap build is not building Apk
<platform name="android">
<allow-intent href="market:*"/>
</platform>
Please Help