I'm still getting this error message, even after reading everyone elses problems
Exception: error in opening zip file
at java.util.zip.Zipfile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at java.util.jar.JarFile.<init>(Unknown Source)
at com.android.signapk.SignApk.main(SignApk.java.320)
JavaDK is installed, the META-INF is deleted and the zipped folder is renamed with .apk
is it really just as simple as renaming with .apk or is there a step I'm missing cause that's all you did in your tutorial
