The problem I describe below appears to be Visual Studio 2010 related, but I post it here too as it is DAQmx related.
Relevant System parameters are: Intel Core2 Quad Q6600; MS Windows 7 Ultimate Edition (build 7600), 64-bit; MS VS2010 10.0.30319.1 MTRel. The latest NI-DAQmx 9.2.2 is installed.
Other two computers where crash occurs in the same way are: Dell Inspiron 9300, Windows 7-32 bit, DAQmx 9.1 and Dell Precision 380 Windows 7-64bit, DAQxm 9.1.
I was trying to rebuild from scratch an application that uses analog input/output from a USB-6211. I had a BSOD right at the beginning stage of writing the app, twice in a row. That evoked my curiosity and I started to minimize required operations to reproduce the crash. Here are steps that reproducibly produce BSOD, the order of steps is important.
1. Create new C# Windows Forms project [I use: CrashDemo]. By default, the target framework is .NET Framework 4.0 Client. If it is not, it needs to be set on the top of the dialog so.
2. Drag a toolbar to the Form and create a button on it.
3. Open code of Form1 and add “using NationalInstruments.DAQmx;”
4. Change Project type from .NET 4.0 Framework Client into .NET Framework 3.5. Warning dialog answer should be “Yes”, I am sure… Project closes and reopens automatically.
5. Delete Microsoft.CSharp reference as it is the only one with an exclamation mark.
6. Add two references: National Instruments Common, version 8.9.35.302; and National Instruments DAQmx, version 9.2.35.32
The code at this point is:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using NationalInstruments.DAQmx;
namespace CrashDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
}
}
7. Compile.
Usually the result is three Error messages:
Error 1: Source file 'C:\TR\CrashDemo\Form1.Designer.cs' could not be opened ('Unspecified error ') CrashDemo
Error 2: Source file 'C:\TR\CrashDemo\Program.cs' could not be opened ('Unspecified error ') CrashDemo
Error 3: The name 'InitializeComponent' does not exist in the current context C:\TR\CrashDemo\Form1.cs 21 13 CrashDemo
Indeed, there are no such files anymore in the solution folder; there are three files total, of them two files are new: "f9df51a8-178e-4090-a550-7f138b44e85a" and "pimmInternalFloatingSharedHeap" in addition to "Form1.resx". All other files are gone.
If there were any above errors, any next operation in GUI, adding/deleting a reference or opening a new C# project or closing the GUI will crash the system.
At first message ”vshost32-clr.exe has stopped working” appears. 3 options are given. Selecting any one of them results in a BSOD. Widows Service Exception BSOD references NIPALK.SYS (DAQmx package). System then proceeds to restart on its own.
Crucial operations for crash appear to be (i.e. crash does not take place without these two conditions)
1. to include at least one control to the form
2. include “using NationalInstruments.DAQmx” statement before the Framework target type is changed.
3. to include DAQmx reference
All relevant parts (DAQ subsystem, .NET 3.5 subsystem) work, that is if the crash recipe is avoided, then this and other programs compile (or do not) and run normally, USB 6211 collects data and so forth
Who's bug ?????
Tonu
