Apktool error using mac.

[Sara Fox]

when i try to run the apktool to decompile my apk it gives off an error:

 Exception in thread "main" brut.androlib.AndrolibException: brut.directory.DirectoryException: java.util.zip.ZipException: error in opening zip file
        at brut.androlib.ApkDecoder.hasSources(ApkDecoder.java:199)
        at brut.androlib.ApkDecoder.decode(ApkDecoder.java:83)
        at brut.apktool.Main.cmdDecode(Main.java:146)
        at brut.apktool.Main.main(Main.java:77)
    Caused by: brut.directory.DirectoryException: java.util.zip.ZipException: error in opening zip file
        at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:55)
        at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:38)
        at brut.androlib.res.util.ExtFile.getDirectory(ExtFile.java:55)
        at brut.androlib.ApkDecoder.hasSources(ApkDecoder.java:197)
        ... 3 more
    Caused by: java.util.zip.ZipException: error in opening zip file
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.<init>(ZipFile.java:128)
        at java.util.zip.ZipFile.<init>(ZipFile.java:145)
        at brut.directory.ZipRODirectory.<init>(ZipRODirectory.java:53)
        ... 6 more

i followed this guide. http://www.adventuresofanentrepreneur.net/creating-a-mobile-appsgames-company/how-to-unpack-pack-an-apk-file

am i missing some files it needs to operate?

[Nayana Hettiarachchi]

did you give it the right path to the apk file?