Hi,
We had to move our website to a new server at the beginning of this year. We ironed out settings and everything was running fine since Jan 2014. We use eo.pdf to convert html into pdf docs in several places throughout our application.

Suddenly on Sunday of this week, the conversion stopped working. We did not upload anything new. We just started receiving the following error anytime our application tried to run HtmlToPdf.ConvertUrl(UrltoConvert,doc) line of code

Server Error in '/' Application.

This session is no longer valid. If you wish to reuse the session later, please consider calling GetCookies to retain the session cookies, then reuse these cookies through HtmlToPdfOptions.Cookies with another session. (4)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: EO.Pdf.Internal.ky: This session is no longer valid. If you wish to reuse the session later, please consider calling GetCookies to retain the session cookies, then reuse these cookies through HtmlToPdfOptions.Cookies with another session. (4)

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ky: This session is no longer valid. If you wish to reuse the session later, please consider calling GetCookies to retain the session cookies, then reuse these cookies through HtmlToPdfOptions.Cookies with another session. (4)]
EO.Pdf.Internal.ll.l() +92
EO.Pdf.Internal.ll.a(a A_0) +1507
EO.Pdf.Internal.ll.a(cp A_0) +32
EO.Pdf.HtmlToPdfSession.Dispose() +100
EO.Pdf.HtmlToPdf.ConvertUrl(String url, PdfDocument doc, HtmlToPdfOptions options) +232
EO.Pdf.HtmlToPdf.ConvertUrl(String url, PdfDocument doc) +7
_2009HRDirector.frmShowJob.btnPrint_Click(Object sender, EventArgs e) +1314
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9615678
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +103
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34009

And sometimes we get this error:
All workers are busy. Please increase HtmlToPdf.MaxConcurrentTaskCount.

Please advise,
Thanks,
Becky

Looking through other posts, we tried updating to the most recent build but then we receive this error:
The error I am seeing is:

License '4461152069' is not valid for this build.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Exception: License '4461152069' is not valid for this build.

we are running ver 4.0.18.2

Hi,

Please try to remove your license code. You will get that error when you apply the wrong license, but if you do not apply the license at all, it will still run and create the PDF file for you, except that it will add the license banner. However that will tell you whether the new version will work for you or not.

Thanks!

Hi,

The problem can be caused by a server overload or an internal crash. If it only occurs occasionally at peak hours on random page then it's probably an server overload. In that case you may want to reduce HtmlToPdf.MaxConcurrentTaskCount. This will not fix the exception, but it will give you an exception much quicker with a different message, which you can handle and prompt user to try again later.

If the problem always occurs on a specific page regardless server load, then it's mostly like an internal crash. In that case we would need you to isolate the problem into a test project and then send the test project to us. Once we have that we will look into it to see if we can reproduce the problem here. Usually as soon as we can reproduce the problem here, we will be able to find out the root cause of the problem.

Thanks!

I think I have the form and job description conversion working. I removed an if statement checking for the session variable and those two started working. We also create a larger employee handbook (20+ pages) with TOC, and page numbering. When I took the if statement out of that procedure, it started giving me the following error:
Exception of type 'System.OutOfMemoryException' was thrown.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.

Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]
EO.Pdf.Drawing.PdfFloatArray.d() +132
EO.Pdf.PdfPage..ctor(ai A_0, c9 A_1) +333
EO.Pdf.PdfPage..ctor() +45
EO.Pdf.PdfPageCollection.Add() +26
EO.Pdf.Internal.gd.e() +24
EO.Pdf.Internal.bb.b() +115
EO.Pdf.Internal.bb.b() +62
EO.Pdf.Internal.bb.x() +209
EO.Pdf.Internal.b.a(i6 A_0) +580
EO.Pdf.Internal.a8.l() +17
EO.Pdf.Acm.AcmBlock.e(j A_0) +47
EO.Pdf.Internal.j.l() +100
EO.Pdf.Acm.AcmContent.p() +941
EO.Pdf.Acm.AcmRender.a(AcmBlock A_0) +57
EO.Pdf.Acm.AcmRender.Render(AcmContent[] contents) +128
_2009HRDirector.PfrmDisplayHandbook.ConvertHandbookToPDF() +4364
_2009HRDirector.PfrmDisplayHandbook.CreateHandbook() +16817
_2009HRDirector.PfrmDisplayHandbook.btnYes_Click(Object sender, EventArgs e) +236
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9615678
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +103
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724

________________________________________
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34009

Then I removed the code that generates the page numbers and it started working. I am pretty much using the code from your example
For I As Integer = 0 To doc.Pages.Count - 1
Dim pageNumber As Acm.AcmText
Dim pageNumRender As Acm.AcmRender

'Create an AcmText representing the page number
pageNumber = New Acm.AcmText(doc.Pages(I).Index + 1)

'Create an AcmRender to render the page number.
'The arguments are:
' First argument: the target page
' Second argument: the "Y" position
' Third argument: The paper margins in left, top, right, bottom order
pageNumRender = New Acm.AcmRender(doc.Pages(I), 10.395, _
New Acm.AcmPageLayout( _
New Acm.AcmPadding(7.5, -0.075, 1, 0)))
'Render the page number
pageNumber.Style.FontName = "Arial"
pageNumber.Style.FontSize = 10.5F
pageNumRender.Render(pageNumber)

Next

Is there anything you can see that is terribly wrong with this code?

Thanks,
Becky

Interesting. Thanks for the update! I am glad to hear that it's working for you again.