[Trouble running more than one alt at once?]

When I hit play I have to wait until the detailed option of whatever script I picked pops up. Mine just takes a while so I wait till the play and pause button high light when I hover over them. Then I know I can proceed since its fully loaded. I too just recently downloaded. I guess it also depends on the type of gear you're running your pc with.

[I feel dumb but.. wheres the script i bought x.x]

I recently purchased the pro fighter and it is not showing up on my scripts list. How does one go about adding it to the list of scripts when you hit play? 
Thank you.