Netload issue - Autocad2011 64bit w/ VB.NET 4.0

[Anonymous]

Hi forum,

I'm a newbie of ObjectARX programming and I'm trying to migrate from VBA to .NET.

I read a few tutorials for developing apps with ObjectARX for AutoCAD.

Now, I'm following a tutorial (here) but I'm having troubles when I load the dll app in AutoCAD.

I get the following message:

Command: netload
Cannot load assembly. Error details: System.BadImageFormatException: Could not
load file or assembly 'file:///C:\Users\Paolo\documents\visual studio
2010\Projects\0.Autocad-HelloWorld\0.Autocad-HelloWorld\bin\Release\0.Autocad-He
lloWorld.dll' or one of its dependencies. This assembly is built by a runtime
newer than the currently loaded runtime and cannot be loaded.
File name: 'file:///C:\Users\Paolo\documents\visual studio
2010\Projects\0.Autocad-HelloWorld\0.Autocad-HelloWorld\bin\Release\0.Autocad-He
lloWorld.dll'
   at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase,
Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark,
Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.LoadFrom(String assemblyFile)
   at Autodesk.AutoCAD.Runtime.ExtensionLoader.Load(String fileName)
   at loadmgd()

AVV: la registrazione dell'associazione di assembly è disattivata.
Per attivare la registrazione degli errori di associazione di assembly,
impostare il valore del Registro di sistema
[HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) su 1.
Nota: alcune penalità di prestazione sono associate alla registrazione degli
errori di associazione di assembly.
Per disattivare la funzionalità, rimuovere il valore del Registro di sistema
[HKLM\Software\Microsoft\Fusion!EnableLog].

I want to program for AutoCAD 2011 32/64bits.

I attach a couple of pictures of my code and referenced dlls for this project.

All the AutoCAD dlls are from C:\ObjectARX 2011\inc-x64 folder, AcDbMgd and AcMgd dlls are from C:\ObjectARX 2011\inc folder.

Thanks in advance for your help.

P.

[Alexander.Rivilis]

Problem is due to:
This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.

What VS version you using? What .NET version target is selected?

[Anonymous]

Hi Alexander,

I'm using VB.NET 2010 Express, targeting FrameWork 4.0 by default

I thought about targeting another FW, I tried 3.5 (My project-Compile-Advanced compile options) but even if the output on building the dll returns no errors, as soon as I load the dll in AutoCAD I get the prompt message I previously posted.

Thanks for your interest in my problem.

Regards,

[Alexander.Rivilis · Accepted solution]

Try to change acad.exe.config file such as:

  <startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0"/>
  </startup>

[Anonymous · Accepted solution]

Hi Alexander, hi forum.

I did find the solution..it seems that for building apps for Autocad2011 the tool needed is Visual Studio 2008 with SP1.

I downloaded the package and installed properly, recompiled the app and it actually works.

By the time I'm writing I see you just replied me.

I try your hint now.

thank you again and regards,

P

[Anonymous]

Thank you Alexander! It works great with your correction.

The code you provided was already there but it was commented in my acad.exe.config xml file.

I copied it and replaced and reloaded the app.

Now everything works fine.

Thanks again.

P.