What are the stats on your OS, version of InDesign, amount of RAM, etc...?
I'm using InDesign CC. I have the cloud, so it should also include the latest update. My RAM is almost 8 usable GB, and the drive I tried to save it on has more than 70 GB of space. This project isn't huge - it's only a 16-page magazine.
Thanks for your help!
I was able to fix the problem. I had placed a PDF in the document that was a little wonky and therefore InDesign wasn't letting me make that page into a PDF. Once I changed the PDF into an image I was able to make that page into a PDF and package the document.