Error Message from Acrobat Reader - Cannot open exported InDesign PDF
Hi,
I've tried exporting a document I'm working on in InDesign to PDF and then opening it in Acrobat Reader, however I keep getting the same message below:

It is quite a large document now, however I was able to open earlier versions which were smaller.
Does anybody have any advice on this? I've only just installed Acrobat Reader so it is the most up to date version.
