Error : Unable to decompile

Here is my log. Any suggesation

Unable to decompile

29Nov2014_0843.11:  Your Platform: windows 8.1

29Nov2014_0843.11:  Java Version: 1.8.0_25

29Nov2014_0843.11:  AppToMarket Version: v3.2

29Nov2014_0843.11:  Install folder: C:\Users\Arnav\Documents\App related\AppToMarket_v32

29Nov2014_0843.11:  Your data was loaded from: C:\Users\Arnav\Documents\App related\AppToMarket_v32\resource\config.txt

29Nov2014_0843.40:  BUTTON CLICKED: Generate

29Nov2014_0844.33:  BUTTON CLICKED: Generate

29Nov2014_0844.33:  ERROR:

You already have a keystore file with specified name. 

...Please use a different name for keystore. We don't recommend deleting keystore. 

...Your selected keystore file is: C:\Users\Arnav\Documents\App related\AppToMarket_v32\myKeystores\myks.ks

29Nov2014_0844.38:  SUCCESS: AppToMarket saved your new configuration file into config.txt file! Also, It made a backup file, from previous config, and placed in the resource folder. Check it out! 

29Nov2014_0844.48:  BUTTON CLICKED: 1> Decompile

29Nov2014_0844.53:  ERROR: Unable to decompile your .apk file