LoaderLock was detected

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have following code am running inside of Visual Studio 2010, .NET 3.5, VB.NET ...

' Create Image using QuickPDF
Dim QP As QuickPDFAX0715.PDFLibrary
Dim Result As Integer
Dim lngFileHandle As Long
Dim pageRef As Long
Dim imageConversionResult As Integer
QP = New QuickPDFAX0715.PDFLibrary
Result = QP.UnlockKey("licensekehere")   EVAL license
lngFileHandle = QP.DAOpenFile(FILE_REPOSITORY & myRow.pFile_ID & "\" & myRow.pActive_version & myRow.pFile_Extension.ToUpper, "")
pageRef = QP.DAFindPage(lngFileHandle, 1)
imageConversionResult = QP.DARenderPageToFile(lngFileHandle, pageRef, 5, 75, strPNGImageFile)
QP.DACloseFile(lngFileHandle)
QP = Nothing

On the line   QP = New QuickPDFAX0715.PDFLibrary get following error.

LoaderLock was detected.
Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang.

Need help in finding out why the API is not working.

Edited by softwaredev - 19 Aug 11 at 9:04PM

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softwaredev Members Profile Find Members Posts Beginner Joined: 01 Sep 09 Status: Offline Points: 17	Post Options Post Reply Quote softwaredev Report Post Thanks(0) Quote Reply Topic: LoaderLock was detected Posted: 19 Aug 11 at 9:00PM
	have following code am running inside of Visual Studio 2010, .NET 3.5, VB.NET ... ' Create Image using QuickPDF Dim QP As QuickPDFAX0715.PDFLibrary Dim Result As Integer Dim lngFileHandle As Long Dim pageRef As Long Dim imageConversionResult As Integer QP = New QuickPDFAX0715.PDFLibrary Result = QP.UnlockKey("licensekehere") EVAL license lngFileHandle = QP.DAOpenFile(FILE_REPOSITORY & myRow.pFile_ID & "\" & myRow.pActive_version & myRow.pFile_Extension.ToUpper, "") pageRef = QP.DAFindPage(lngFileHandle, 1) imageConversionResult = QP.DARenderPageToFile(lngFileHandle, pageRef, 5, 75, strPNGImageFile) QP.DACloseFile(lngFileHandle) QP = Nothing On the line QP = New QuickPDFAX0715.PDFLibrary get following error. LoaderLock was detected. Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang. Need help in finding out why the API is not working. Edited by softwaredev - 19 Aug 11 at 9:04PM

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 21 Aug 11 at 4:54AM
	Have you tried downloading the 7.26 release as there have have been more than a few changes to the ActiveX / DLL and .NET interface files. The update can be downloaded from here. http://www.quickpdflibrary.com/products/quickpdf/updates.php Andrew.

softwaredev Members Profile Find Members Posts Beginner Joined: 01 Sep 09 Status: Offline Points: 17	Post Options Post Reply Quote softwaredev Report Post Thanks(0) Quote Reply Posted: 21 Aug 11 at 3:47PM
	Tried the 7.26 same results, get the same exact error.

softwaredev Members Profile Find Members Posts Beginner Joined: 01 Sep 09 Status: Offline Points: 17	Post Options Post Reply Quote softwaredev Report Post Thanks(0) Quote Reply Posted: 21 Aug 11 at 3:52PM
	Just realized this error occurs only if I attempt a debug (F5) from within Visual Studio 2010. It does not get this error when directly launching the exe as normal program. Guess its a low priority in that case for me. Though if you have any idea of what is going on with the VS2010 and your ActiveX API that will help me in the development process

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 24 Aug 11 at 2:28AM
	I use VS 2010 and F5 all the time without getting this error. It could be a project setting or something similar. If you are getting the same results in 7.15 and 7.26 then it is most likely on your side as no one else has reported this problem. Doing a Google or StackOverflow search turned up different solutions. It sounds like you might be using other DLL's in your project that could be causing problems. eg DirectX. Andrew