Post [Q] Why can't I use WotanServer

I want to flash my Sony Neo with WotanServer.
But whenever I flash with WotanServer it means can't open certain file.
For example, if I want to flash to 4.0.A.2.368 UK firmware, after downloading for a while there is pop up show" CRC:Can't open C:\Wotanserver\data\flashes\RXCc0d0735a9c5e9f361fb b70fceb32634a"

What should I do.