I've got a very strange issue here - we use PDFsharp 1.31 as part of a C# application that generates PDFs, which are then made available to download on the web. We've had a number of customers report that when they open the PDFs they appear entirely blank, however if we open the same thing it looks fine.
Even more strange, if we send them the file as an e-mail attachment it also opens fine for them, suggesting it is something to do with being opened 'in browser'. We've asked a few times for people to send us the blank PDFs they have, and they do indeed appear blank to me in various versions of Reader etc, however judging by the headers (the PDF version jumps from 1.4 to 1.6) these have been modified by Acrobat (so they've presumably used the 'Save a Copy' button or whatever).
I'm trying to collect information as to what version of Acrobat people are using when this happens, however this is proving tricky as once people have a PDF that works for them they tend to go quiet and not care any more.
Has anybody seen anything similar, and if so any suggestions for things we could try that might fix it?
Further information if useful - the PDFs are A4, created by taking a single page A4 template PDF, and placing some text and images over this.
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