I'm a newbis and I had the same screen but I retried this method step by step and it worked then.
I would advise you to restart from the beginning, including the driver installs.
I also chose the second file for flash (Flash_184.108.40.206.bat)
I hope it will help.
Thanks a lot for the instructions.
I install TWRP successfully and rooted Hi8 pro very easy in Android.
What i didn't understand in the beggining, was that i have to run .bat files directly from my desktop PC.
But when i try, it was very easy.