Modified Poweramp skin doesn't run

[WilliamTael]

I’ve changed some png files on a Poweramp skin and tried loads of time to compile it using tools like apktool.jar,

but they all show errors and my android device shows a “parsing error” when trying to run the theme apk file.

I did all the changings on PC and only changed png files (I didn’t renamed any file).

Can someone help me? All the tutorials on the web doesn’t work for me.