For COLOR QUANTIZATION 
This Program Uses FreeImage Lib.
(http://freeimage.sourceforge.net/download.html)

Can download it from Web or Rename these files

FreeImage.dll.TXT
FreeImage.lib.TXT

to

FreeImage.dll
FreeImage.lib


'----------------------------------------------------------
For VECTOR GRAPHICS

It Uses POTRACE.EXE too
(http://potrace.sourceforge.net/#downloading)

Can Download it from Web or Rename this file 

potrace.exe.TXT

to

potrace.exe


For me no problem with these files...
But Use at your own Risk!