If you have a look in the folder where you put the Binarize utility from BIS you will see a file called exclude.txt. It should have the following file extensions which causes the Binarize tool to stop copying any files that may be in the folder but not belong to the addon.
Because i usually save my .tga, .gif, and .psp (Paintshop Pro) files into the addon folder while i am building the addon. if you add the following to the exclude.txt file Binarize won't copy those files into your new /op/addon Name folder:
.3ds was added because sometimes i create the model initially in 3d Studio or Truespace. If you use Phoposhop and save in the Photoshop format include the extension for that too.