Android Source resource does not exist

While working on Android project with Netbeans I got this error and to resolve it we need to follow these steps:

1. Open Project Folder
2. Open build.xml with any text editor
3. Search for "project.properties" and replace it with "default.properties", means replace
   <loadproperties srcfile="project.properties"></loadproperties>
   to
   <loadproperties srcfile="default.properties"></loadproperties>

Hope this helps :)