Peled,
Thank you for your reply.
I was kind of expecting the cause that you described since I understand that the PDF format is an open standard created by Adobe but many developers market their own versions of PDF creators including the one I use from Nuance Corp.
So, it appears that the problem is with Paperport scanning/file management software that I use to create the PDF files I tried scanning the document using "gray scale" and "BW" but neither work. Could it be the toner used on those docs because, I can scan and transfer other docs successfully"?
Don't fight the iPad when it can't read a PDF file that any other PC can.
Just convert it to something the iPad CAN
chew
I personaly use PdfFactory Program (bought it long long time ago) to create PDF files from anything I want.
It is an additional Print Driver that I call when ever I need a PDF file, be it text or picture.
So. The App, instead of Printing, it is creating a PDF File.
Just Google the term
"Print to PDF" Free download and you will find free programs doing the same.
That way, every time iPad is miss-behaving with some PDF file.
Just open it on your PC (in 100% it will be OK) and print it into becoming another PDF file.
Now for sure Apple's iPad will probably recognize it.
Like preparing a mashed meal to an elderly withnot teeth.