Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

[fscopel]

I get this random error, any ideas where to start?

Message: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

StackTrace:
at Pechkin.PechkinBindings.wkhtmltopdf_convert(IntPtr converter)
at Pechkin.PechkinStatic.PerformConversion(IntPtr converter)
at Pechkin.SimplePechkin.Convert(ObjectConfig doc, Byte[] html)
at Pechkin.SimplePechkin.Convert(ObjectConfig doc, String html)
at Pechkin.Synchronized.SynchronizedPechkin.b__2(IPechkin conv, ObjectConfig obj, String txt)

[brendan-rice]

Aye you sure it is random? I was getting the same error. The first time a PDF was generated it would work fine, anytime after that I got the error above. It was in a web project and due to bad configuration as far as I could tell. Here is what I have for IIS that works fine:

    private byte[] GetPdfBytes(Quote quote, GetQuoteOutput quoteOutput, Tenant tenant)
    {
        string partialView = string.Format("PDF/Tennants/{0}/Template{1}", this.CurrentSession.TenantId,
            quote.TemplateId);

        string htmlText = RenderPartialViewToString(this, partialView, quoteOutput.Quote);

        string baseUrl = Request.Url.GetLeftPart(UriPartial.Authority);
        string headerUrl = string.Format(baseUrl + "/tenantfiles/{0}/header.html", tenant.TenancyName);
        string footerUrl = string.Format(baseUrl + "/tenantfiles/{0}/footer.html", tenant.TenancyName);

        //IPechkin pechkin = Factory.Create();

        var document = new HtmlToPdfDocument
        {
            GlobalSettings =
            {
                ProduceOutline = true,


                DocumentTitle = "Quote - " + quoteOutput.Quote.Reference,
                Margins =
                {
                    Top = 3,
                    Right = 1,
                    Left = 1,
                    Bottom = 3.4,
                    Unit = Unit.Centimeters
                }
            },
            Objects =
            {
                new ObjectSettings
                {
                    HtmlText = htmlText,
                    HeaderSettings = new HeaderSettings() {HtmlUrl = headerUrl, ContentSpacing = 6},
                    FooterSettings =
                        new FooterSettings
                        {
                            HtmlUrl = footerUrl,
                            RightText = "[page]/[toPage]",
                            FontSize = 9,
                            FontName = "Trebuchet MS",
                            ContentSpacing = 10
                        }
                }
            }
        };

        // Keep the converter somewhere static, or as a singleton instance!
        // Do NOT run the above code more than once in the application lifecycle!

        byte[] pdfBytes = HtmlToPdfConverter.Converter.Convert(document);

        return pdfBytes;
    }

}

[sanore]

I had the same problem and the static trick isn't working for me.

[miyagisan221b]

3 years old, but still... did you end up working this one out?

[campbellja]

Please assist as we are also interested in a solution for this.