So I started with a new file, and slowly added assets and mixed and matched assets while exporting to see where it would no longer export. I got to the point where I had all of my graphics, title, authors, and background image, but as soon as I added my bulleted text I get these errors again. The progress bar for exporting will go to about 50% before it gets that error. I can export it to .psd and open it in Pixelmator and export it to PDF, but at that point, the text isn't selectable and the graphics have been rasterized which is what I was hoping to avoid.
The file size prior to adding the text is about 25 Mb, so I don't think I should be running out of memory? Will there be a significant reduction in quality by printing from a PNG over a PDF?