Released Autumn Ring (My obstacles aren't working?)

Hello, I have made an Autumn Ring rip-off in the track editor. Also, my obstacles are not working; when I add a cube and then try to change it, it leaves the cube and adds the object I chose. This happens when ever I change any setting. Is there a way to troubleshoot this problem? Enjoy!

 

Thank you for taking in my comment Looking forward to next update

 

Just logged on today to add some pieces to Not Impossible Track 3. Everything is working Awesome! Stay tuned for my next track.

Thanks for your help!