I see that the block is now detached but it needs to start up against the spring with the spring already compressed. 

The block should be against the spring ready to be launched to the right. 

The vector arrow should be removed or shown pointing to the right after launch. 

When there is no friction, the block should continue off the page and disappear.

The area after the spring should be much larger since that is where the action is taking place.

I've attached a better picture of what I mean.