While running windows batch installer it fails with that error. I followed the steps as best I could

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system? windows 8.1 64bit version feb 2013 version

Please provide any additional information below.

The Flip installer adds the Flip bin directory to the user's PATH environment variable (C:\Program Files (x86)\Atmel\Flip 3.4.7\bin on my machine here). This is where the various required files batchisp.exe, AtLibUsbDfu.dll and AtJniIsp.dll can be found. To get the PATH variable to be recognised, Windows might need a reboot. Also the UnoJoyDriverInstaller.bat needs to have run and installed the drivers OK. I'm not sure Windows 8 will enjoy the unsigned drivers provided!

In order to get this to work I just manually ran the batch commands and it went fine. Windows 8 had no problems with any of the drivers and the whole thing was a roaring success. I've thus far gotten the thing to work on my ps3, pc and with a little help from a third party device, my xbox one.