"An error exists on this page. Acrobat may not display the page correctly..." when open file created with Bluebeam Revu

I ran into a similar issue. What I had done is reduced the lumosity through color processing. I opened the original document seperately brought all my new elements in via copy and paste without adjusting lumosity and the error no longer existed. Not sure if it is the same case with you, but this work around worked for me. Not optimal, but it relieved the issue.

This is usually a pretty good indication for a problem with the PDF file. If you have Adobe Acrobat Pro, you can run a preflight check to list syntax errors in the PDF file. Just because other PDF viewers are not reporting this error, this does not mean that there is not a problem in the PDF file. Even Acrobat or the free Reader will fix certain errors behind the scenes.

In my opinion, software that silently ignores errors is actually doing you a disservice: You want to know that some of your application are creating corrupt PDF files, so that you can complain to the developers and have them fix the problem. If you save this file, and not touch it for five or ten years, who knows what software we will be using then to view and process PDF files, and what such an application will do with a corrupt PDF.