My Macbook superdrive wasn't loading. A common weakness in Mac laptops, I've found.
Well, my Spudger tool arrived as did the new drive. Then, lo, what is that sticking out of the DVD slot? Why, it's a penny! Must have spudged in there from my laptop bag. Hmmm. Penny extracted, drive working. We'll see, but thanks to the iFix it install photos, I'm sure it'll go well, if the problem returns...even without the penny.
Keep your change in your wallet.