Fix for "BadImageFormatException was unhandled" on x64 platforms

Question

In case anyone else runs into this, I found a solution on the ADO.NET forum:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=665884&SiteID=1

You need to set Properties > Build > Platform target to "x86". This will force it to run in WoW64, so the 32-bit mixed model Phoenix assemblies will load.

Ravi

Answer 1

Thanks for that link Ravi.  That is correct.  In the future we should change the solutions so that they come out the box as 32bit only.

Another thing you can do is set your system so that it uses the 32bit CLR by-default.  You can do this by calling:

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe setwow

If you're doing this from a Vista box, make sure you run this from an Administrator command prompt.

Thanks,

Answer 2

Thanks for that link Ravi.  That is correct.  In the future we should change the solutions so that they come out the box as 32bit only.

Another thing you can do is set your system so that it uses the 32bit CLR by-default.  You can do this by calling:

C:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Ldr64.exe setwow

If you're doing this from a Vista box, make sure you run this from an Administrator command prompt.

Thanks,

Using your idea, I made some .bat files that you can use to easily switch back and fourth from 32bit to 64bit. Just make sure you run them as admin.

http://jds.enifiy.com/backpackfix64/

Answer 3

This link no longer works.  Can you please explain to me exactly how to make this fix so I can make Backpack work on my Vista64 laptop?

Answer 4

Try again.  I just checked the link and it seems to work.

Answer 5

Hi KangSu,

I tried to use the link but I'm receiving the following error:

Forbidden

You don't have permission to access /backpackfix64/ on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

---

KillerTiger

Answer 6

Using the call you guys say to use just creates a new error stating that the code returned -1 or something to that effect.

Anybody have any idea whats going on?