LoaderLock Error Detected?
Apr 20, 2009
I'm using an AutoDesk Inventor View API (dont think it matters for this question) placed on my form. I can call files and have them open without issue, only when I open assemblies (drawing files) I get this error:
"LoaderLock was : 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."
I dont expect anyone to know much about the API, however I assume this is a common error.
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May 5, 2010
This is the message that I'm getting out of a program I'm writing.
InvalidApartmentStateChange was detected
Message: The current thread used to have an apartment state of MTA, but the application has CoUnitialized this thread and it is now STA. This may cause calls on RuntimeCallableWrappers representing some COM components to fail and may also cause COM component that are not multi-threaded to be accessed from multiple threads at the same time which can cause corruption or data loss.The current program structure is UI buttons that activate a BackGroundWorker object to do the processing and display progress in a progressBar.The only thing I seem to have added (as in I disable the code and it works fine) is code to print two reports.To sum up, I'm in the backgroundWorker thread, and I kick off an event "PrinterDoc1.Print()" which I've handled (there doesn't seem to be much flexibility on using an event for that), then later on in the backgroundWorker thread this error shows up pointing to the invocation of a delegate which updates a label on my form.
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Feb 4, 2012
im developing an application with an error log, when something goes bad, it must send through mail the error details so i can remotely fix and upload a new update with the fix.Im using Try Catch Exception but i have a lot of methods to include this option in, is there another way to do it without doing so much code?
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Mar 8, 2011
I'm using the following code and it's bringing up this error 'PInvokeStackImbalance was detected'.
Public Class Form1
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As Integer
[code]....
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Mar 25, 2012
I recently revised a VB ListView and removed one column of data, and failed to spot an If ... Then reference to data in the removed column. The code runs without the 'impossible' SubItem query being detected in my W7-64 desktop IDE, but crashes in the compiled/ installed version. In my older XP-32 laptop however the code error is trapped as it should be. I have noticed occasionally that other minor code errors are not trapped in the W7-64 system - is that normal, or has my W7 IDE been damaged somehow? Should I delete and re-install VS 2010 in the W7 machine ... not a trivial task!
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Jul 13, 2009
OK, I've read everything I could find about this loader lock exception: DLL <name>.dll' is 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.
Just turning off the loader lock exception in the managaged debugging assistants doesn't work (my real application then hangs), and all the work-arounds are for doing things in C++ that I can't do in VB (like setting linker options). So, can anyone tell me how to make this simple blank form (with two additional lines of code in the constructor) avoid a loaderlock execption under VS2008? (If I know what to do to fix this toy example, I can probably fix my real app.)
[Code]...
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Feb 4, 2011
why I am getting the following error? I have debugging enabled.Server Error in '/' Application.A potentially dangerous Request.Form value was detected from the client (strContent="<p>test</p>").
Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (strContent="<p>
test</p>
").
Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:
1. Add a "Debug=true" directive at the top of the file that generated the error. Example:
<%@ Page Language="C#" Debug="true" %>
or:
2) Add the following section to the configuration file of your application:
<configuration>
<system.web>
<compilation debug="true"/>
[code]....
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May 18, 2011
I'm getting this message in my 2010 debugger suddenly for some reason:The CLR has been unable to transition from COM context 0x4c4b68 to COM context 0x4c4cd8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
It happens while I am looping through a datatable. In each iteration I do a SQL Select lookup and a a SQL Update if I don't find a matching record.
For Each drCurrentRow As DataRow In m_Dataset.Tables("Group").Rows
Dim boolFound As Boolean = False
CheckForRecordInTemp(boolFound, drCurrentRow.Item("ACTIVITY_GROUP"))
[code]....
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Jul 7, 2011
Am getting this error when am running the code to open/close the CD try:"PInvokeStackImbalance was detected Message: A call to PInvoke function 'TabsTest!TabsTest.Form1::mciSendString' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature"
[Code]...
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Feb 7, 2012
I am running out of function keys and it will be nice if I can double up on some of them with the Shift Alt or Ctrl keys.I am using
if e.keydown = keys.F3 then{it does what it is supposed to}end if I tried e.keydown = keys.F3 AND e.keydown = keys.Shift but it gets ignored. Am I seeking the impossible or am I just missing something?Can some one tell me what I am missing or point me to an example?
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Dec 3, 2010
CLR detected an invalid program
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Apr 14, 2011
I am using the following function within a WndProc override:
[Code]...
Edit and Possible Solution: Based on the answer at DisconnectedContext MDA when calling WMI functions in single-threaded application I think the solution here is to call GetPortName() outside of WndProc. I will test this tonight and post my result.
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Aug 27, 2010
I am getting this right after I bind grid. I called the db multiple times (no more than 5.) and I bound those result to a datatable and it then throws this error. I was not getting this error yesterday when i was running this program. And there doesnt seem to be anything I have not done before.
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Feb 23, 2012
Hi to all, i really need some help with a piece of code. Im developing an app, which receive midi TIMECODE (MTC) and shows it on a textbox. when i start the app, it runs ok, and shows the mtc on the textbox, but after a few seconds it crashes and shows an error:
"A callback was made on a garbage collected delegate of type 'MidiTesting!MidiTesting.MidiIn_Callback::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called."
[Code]...
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Jun 4, 2012
I want to make an internet checker , but I don't know what's the problem with this PinvokeStackImbalance. Actually, the code was made for Visual Basic 2008, But I`m using Visual Basic 2010.
WebTest = CBool(InternetGetConnectedState(dwflags, 0&))
Where's the problem? Btw, it's a module.
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Nov 23, 2006
im trying to grab the Text from Yahoo Messengers Window in Microsoft Visual Basic 2005 Express Edition. I get this error when trying to grab the Chat Windows Text. Edit... think that was my code to set win Text but still i dunno why that error happens.
[Code]...
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Feb 25, 2009
Then i downloaded C4F (Code 4 Fun) an application that's allow you to make Peer2Peer Applications using the PNRP.
So then i made a simple chat (Must say you do not need to fill in any code at all for this chat system) then i compile the source code to an *.exe file and everything seems fine at this stage.
But now the problem accours, when im am sending my chat application to my friends they got an alert about it's a virus im sending them. but when the file is on my own system it dosent say anything at all, and i have AVG Pro Edition & OutPost Firewall 2009 with lifetime license. and all my Anti Virus / Spyware Engine is up to date.
I have been writing on another forum on the internet but they just told me that my system was infected with a virus and that was the problem. s� ive completely deleted my whole system, and installed the Windows XP Professionel again.
But i i stil have the same problem? any one knows whats going on here. i cant post anycode for this cause you don't need any code for making a Chat application in C4F, Basicly it loads a C4F project in to Visual Basic Studio 2008 with no source at all.
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Jun 9, 2010
Message: The CLR has been unable to transition from COM context 0x1b2008 to COM context 0x1b2178 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulatingcontinually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.
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Mar 18, 2010
New one on me. RaceOnRCWCleanup was detected happens when I close my application. The complete error was:"RaceOnRCWCleanup was detected Message: An attempt has been made to free an RCW that is in use. The RCW is in use on the active thread or another thread. Attempting to free an in-use RCW can cause corruption or data loss."
I found a link for the error here[URL]...34(VS.80).aspx . That either went screaming over my head, or it is like listening to politicians, a lot of words that don't mean much.
My best guess is that I added a WMI query that runs periodically in a background thread, thinking that because it was a background thread I had nothing to worry about. I added some code to close the background thread before the application closes and so far,
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Feb 15, 2012
[code]A call to PInvoke function 'WindowsApplication1!WindowsApplication1.FEUSB::FEUSB_ScanAndOpen' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature."
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May 22, 2012
I am trying to load data using a backgroundworker using a code snippet that I found. I think that it would all work fine, except that I am getting an error that I am doing a cross thread operation. The task that I am trying to accomplish is loading data for a large dataset when a command (Run Operation) is called so that I can prepare the user that it may take a long time, and I can display a scrolling marque to show them that the program is not frozen. I am using a separate form to display the warning, an OK button, and a scrolling marque.[code]
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Feb 9, 2012
trying to detect the process, if it is not running, then only run the process, but it still runs the process eventhough the process is still running :(
For Each Proc As Process In Process.GetProcesses()
Dim strProc As String = Proc.ProcessName & ".exe"
If Not strProc = "MemberSyncFBtoSQL.exe" Then
[Code]....
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May 29, 2009
I am using a TwainPro4.dll for scanning purposes in my VB.net application framework v3.5.When i run my application i get the below exception,
LoaderLock was detected
Message: DLL 'C:WINDOWSassemblyGACPegasusImaging.WinForms.TwainPro44.0.22.0__80d669b8b606a2daPegasusImagi
[code].....
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Jun 11, 2010
So, I am just trying to get the snake to move after it collides with the picture box. Right now, the snake is moved by using the arrow keys. However, once it collides with "the food", it won't move.
Imports System
Imports System.Drawing
Imports System.Drawing.Graphics
[Code]......
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Sep 13, 2011
Im trying to make a simple uploading program but when i run the program it is being detected as a virus and is being deleted. I have tried using 2 different ways of doing the ftp uploading but both are being deleted. the code im using is:
My.Computer.Network.UploadFile("file location", "upload location", "username", "password")
and
Dim request As System.Net.FtpWebRequest = DirectCast(System.Net.FtpWebRequest.Create("upload
[code].....
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Jan 3, 2012
I've developed a simple program and in it I 'copy-pasted' some code which makes a copy of the program executable in a particular path (docs folder) and sets registry to start the executable in windows start-up only.. Everything is working absolutely fine in my PC. But when I sent the exe to my friend's PC. Then the antivirus in her PC detected it as a trojan!
[Code]....
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Apr 5, 2010
I would like to detect the insertion, and completion of installation of a USB cable in VB2008 as two separate events. The driver gets installed prior to insertion of the cable.
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Aug 23, 2009
I am working on the msi installer built by VS(Setup and Deployment Project). I 've got everything else working like charm except the prerequisites of the project.
[Code]...
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Apr 3, 2009
I have a form that have many text fields and all are being validated, I also added the NiceEdit plugin to be able to format text in my text areas, but it is raising errors like:
A potentially dangerous Request.Form value was detected from the client Now I can simply go to the top of the page and in the page directive add ValidateRequest="false" but this will deprive me from all the validation that I really need, so how can I switch validation OFF for my text areas ???VB.net, ASP.net 3.5, VWD 2008 Express...
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Feb 17, 2009
I'm looking for an easy and free way to detect my dog's bark using a microphone attached to the computer. Basically, I just need a component to trigger an event when a sound is detected above a threshold...no fancy processing required. I've found some sound components, but they all seem too complicated for this application.
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