Shield - Can't get admin cmd

I followed the walkthrough up until the last point, where you execute the js.exe and the shell.bat file. The first time I did it I got a command promt, but it did not have administrator privileges, so didn’t help. The walkthrough said it might not work, and I added on the -c and the additional payload specified in the walkthrough to the .bat file, but now I cant even get a shell anymore, nothing is working. I tried to rename the files and listen on different ports but to no avail. Any thoughts?