i get this error: -code-gen: [echo] SKIN: Generating R.java / Manifest.java from the resources... [exec] W/asset ( 4784): Asset path ${Poweramp.apk} is neither a directory nor file (type=1). [exec] ERROR: Asset package include '${Poweramp.apk}' not found. BUILD FAILEDC:\Program Files (x86)\Android\android-sdk\tools\ant\build.xml:601: The following error occurred while executing this line:D:\Users\Denis\workspace\skin_lib\build.xml:32: exec returned: 1 Total time: 1 second my build.xmlbuild.xml