The cause of having IndexOutOfBounds is 1 cause which is , changing your repack.
What you need to simply do is to copy all the .jar files in ur dist folder and put it in this 2 following folders:
C:\Program Files\Java\jdk(whatversion)\jre\lib\ext
C:\Program Files\Java\jre6\lib\ext
Wish it helps lots of u as there is many people facing this error..
