I'm on a mac running OS 10.15.7 I have a pdf file that is 2.94 GB and it will no longer open with Acrobat. I have several copies of the file and know they were viewed and edited last year. I am preparing to output the file again and it does not open. It can be opened with preview. The RIP sees it with no problem but Acrobat does not even try opening it. No errors at all. I've copied the file to a local drive and still nothing. Any hints or suggestions would be appreciated.