Recently restored my OC which has caused me to have to reinstall all of my programs. So far most everything has went well except SSD4 (Steven Slate 4). When I create a track with is, a message pops up saying I don't have a license (which I haven't been able to open up the plug to fix) then when the track populates, when I click on the keyboard icon just beside the Track number in the track view, it wont bring up the plug in. Anything I do after this causes SPLAT to stop responding> I have tried existing and new projects. Any one have an idea of what's going on?

Drop the license in your SSD4 library folder. Then see if it will load.
 

System requirements:
2.2 Intel Dual Core or AMD Processor, 4 GB of RAM
Screen Resolution of 1280 x 1024 or higher
 
make sure your graphics card has the latest drivers.
Did you do that after you restored your OS ? ?