@pghaworth, It would be a lot easier to help you if we could see some error messages. Try opening kobopatch.bat in your text editor and putting this in it:
Code:
@echo off
cd /d "%~dp0"
erase "KoboRoot.tgz" >nul 2>&1
"./bin/koboptch-windows.exe"
PAUSE
When you double-click the .bat to run it, that PAUSE on the last line should stop the Windows CMD window closing before you get to see any error messages.