I purchased 2 addons. One is stillmotion and the other is stuttermotion. The problem is that it won't install on my computer. I have to have a computer with Admin rights on one side which is never used and then the user side which is only used by one person. I installed it and it does not show up. I have given the user side admin rights and tried but it still does not show up in SVP 13. What do I need to do? What am I not doing? Thanks.