Export crystal report 8 to pdf

Hello,

I 'm using vb6 and crystal reports 8. I want from my code to export the printout to pdf.

crReport.ExportOptions.DestinationType = crEDTDiskFile

crReport.ExportOptions.DiskFileName = App.Path & "\test.pdf"

crReport.ExportOptions.FormatType = crEFTPortableDocFormat

crReport.Export False

First it said missing dll or out of date. It seemed u2fpdf.dll wasn't present at \windows\crystal directory. Don't know why, though I did a full install. I downloaded the pdf and put it there but now I get an error:

failed to export file

Any ideas on how to solve it?

thanks