I've had the same issue here in the last few days. That is an instant crash when chaning PDF settings. But I'm using SP1 Slipstream so I wondered if that was fixed by SP1?
Following what you are saying above Kelvin is difficult.
I've had this message -- "not all charachters will display in the final PDF document"
But I've never seen an impact in the PDF.
I think you need a different method for creating a PDF if this have not been resolved in SP1. IE Acrobat or one of the other products.
Personally I don't use PDF for print but PS files printed to disk using the same Postscript driver as the RIP. I only use "Export PDF" for client softproofs.
You can use GhostScript which is free to check those files. http://pages.cs.wisc.edu/~ghost/
Ask the printer for a copy of his printer driver and explain what you intend to do.
For outputs to high resolution devices text as curves is perfect. For softproofs (screen) it's way better to embed fonts thereby getting the benefit of hinting on display.
Yani