I found the answer out recently, pretty simple fix actually.
In order to fix the issue, you should have a global variable set to the actual JDK build folder, however I didn't do this. Making an absolute path to the executables works just as well (ex. instead of keysigner.exe, use C:\Program Files\Java\jdk1.7.0_21\bin\keytool).
I really hope this helps someone in the future.