Strange error when trying to build version 3.3 in release mode

Sorry my English is very bad

I dowload the 3:30 nopCommerce did not change any

I performed a rebuild on the solution
and when I did so the publish web project this error occurred:

Error  190  An attempt was made to load an assembly with an incorrect format: C:\Windows\Microsoft.NET\assembly\GAC_64\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll.  C:\Users\Jonatas\Desktop\nop\Libraries\Nop.Services\SGEN  Nop.Services


I am using visual studio 2012 and are installed frameworks 3.5,4.0,4.5,4.5.1

in debug the application works normally'm just having trouble generating the package to publish

I thank anyone who can help me

sunnyw wrote:

Hey sunnyw, my application pool is v4.0 integrated and using Visual Studio 2012, still getting errors (and cannot build in release mode)

Are you running Visual Studio 2012 or 2013?

I'll chip in - I've successfully built & navigated around my site in release mode using 3.3 (VS 2012). Unsure about your specific problem though, I'm sorry.

Unable to solve the problem besides installing Framework 4.5.1 is necessary to install the Microsoft. NET Framework 4.5.1 Developer.
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Microsoft .NET Framework 4.5.1 Developer Pack for Windows Vista SP2, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2008 SP2 Windows Server 2008 R2 SP1, Windows Server 2012 and Windows Server 2012 R2

http://www.microsoft.com/en-us/download/confirmation.aspx?id=40772
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Thank you all for the help! :)

Reinstalling 4.5.1 may work or also you can do this to fix the issue: https://www.nopcommerce.com/boards/t/29775/error-when-built-nopservices-in-release-mode.aspx?p=2#139380

I have solved this error on Visual Studio 2012 version with .Net Framework 4.5

Go to Nop.Services > Properties and set target framework 4.5 and debug mode from any cpu to x86

Please see answer of this question in detail with screenshots.
http://stackoverflow.com/questions/24040059/vs-2010-tfs-2013-sgen-an-attempt-was-made-to-load-an-assembly-with-an-incorrec/31354437
I am very hope you can get your answer.