An attempt was made to load a program with an incorrect format

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Could not load file or assembly 'TwainDotNet, Version=1.0.0.0, Culture=neutral, PublicKeyToken=d3cd6e1539fa8c71' or one of its dependencies. An attempt was made to load a program with an incorrect format.

What I have tried:

i am also set my Set my project to x86 to use TwainDotNet.

i don't know what to do now... :(

Posted 6-Nov-17 23:14pm

ketan Ram Patil

Updated 16-Nov-18 20:04pm

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Member 13483971 · Answer 1 · 2017-11-07T20:57:00

Solution 1

Hi Ketan,
I had the same error when a dependant dll file I copied had zero bytes. Use File Explorer to check the size of any dll's that your program needs and make sure they are not zero bytes in size.
Cheers

Posted 7-Nov-17 20:57pm

Member 13483971

Comments

ketan Ram Patil 8-Nov-17 5:19am

Thank you For your valuable replay. i am also checked in the file explorer dll size is not empty.
:(

ruyet7247 · Answer 2 · 2018-11-15T12:02:00

Solution 2

You must do these steps
1-Project> yourproje PROPERTIES
2-Left Menu> Build tabs
3- Checked "Prefer 32-Bit"
Finish.

Posted 15-Nov-18 12:02pm

ruyet7247

Updated 15-Nov-18 19:21pm

Comments

Richard Deeming 16-Nov-18 9:38am

The OP already said that they've set the project to x86.

ruyet7247 16-Nov-18 14:24pm

I say;
I don't want it to be set to X86
1-Project> yourproje PROPERTIES
2-Left Menu> Build tabs
3- "Prefer 32-Bit" checked (click here)
NOT: Platform target= AnyCPU (platform will be anycpu)

Richard Deeming 16-Nov-18 14:26pm

"32-bit" and "x86" are the same thing. 🤦‍♂️

ruyet7247 16-Nov-18 14:28pm

I know, but the system works this way.

Richard Deeming 16-Nov-18 14:30pm

What part of "The OP has already set their project to x86" was unclear?

You've posted a new solution to a question from last year simply to tell the OP to do something they've already done!

ruyet7247 16-Nov-18 14:36pm

("The OP has already set their project to x86") = (Platform =X86) or 32 bit
and I know.

Another area I'm saying;
1-Platform= Any CPU
2-Prefer 32-bit checked (true)
These two places will be preferred

ruyet7247 17-Nov-18 2:06am

Please see here