How to use unmunch command of hunspell?

Question

The project link : https://github.com/hunspell/hunspell/

I have followed the instructions and compiled the DLL files on windows 8.1

Here the dll files folder

Then i start a CMD window as administrator

Move to that folder and run this command

unmunch.exe tr.dic tr.aff >> asdas.txt

It gives the below error at the end when trying to write to a file i guess

How can i solve this problem? I also need output file to be encoded as UTF8

Ty