A> Have a file that's 4 up and there's 500
B> I have another file that's 4 up but there's only 1 page.
I need that file inserted in between the 500 pages.
For instance it goes A,B,A,B
Tried to do it in InDesign, got it to work, but it crashes and messes things up and takes an age to export the PDF.
Any ideas?