Problems with pdflib-3.02

I have script that generates a pdf width some text and two images in it. One of the images is just a header and works fine. The other is a photo, now, this sometimes works and sometimes doesn't. I can't figure out why. When the photo doesn't appear I eventually get a box saying something like "An I/O processing error occured". Sorry, can't remember the exact message, and as I write this message I can't seem to get it back. Also, when you print one of the broken PDF's it locks up the browser (works fine on the non-broken ones). Here is the script I use to send the generated PDF to the browser: <? if(file_exists("/path/to/file/photo.gif")) { $pic = pdf_open_image_file($pdf, "gif", "/path/to/file/photo.gif"); pdf_place_image($pdf, $pic, 38, 450, 1.5); } .... .... .... pdf_show_boxed($pdf, "$rcpt_name\n$address\n\nInvoice no: $invoice_no\nDue Date: $rowdata[duewhen]\n\nNet Price: \$$netprice\nGST: \$$gst\n\nTotal to pay: \$$total", 380, 10, 200, 150, "right"); pdf_end_page($pdf); pdf_close($pdf); fclose($fp); header( "Content-type: application/x-pdf" ); header( "Content-Disposition: filename=$REMOTE_USER.$id.pdf" ); header( "Content-Description: PDF Format Invoice" ); header("Location: /invoicing/$REMOTE_USER.$id.pdf"); ?> Anyhelp would be muchly appreciated. Cheers PS, Its all in IE5.x in win98/win2k Philip Murray me@philth.net.nz