Unrecognized attribute ‘targetFramework’. Note > that attribute names are case-sensitive

I try to publish a web application from my VS2012 to a remote computer.
I published the files but when I try to open the website, I get this error:

Configuration Error

Description: An error occurred during the processing of a
configuration file required to service this request. Please review the
specific error details below and modify your configuration file
appropriately.

Parser Error Message: Unrecognized attribute 'targetFramework'. Note
that attribute names are case-sensitive.

Source Error:

Line 41: 
Line 42:     <compilation targetFramework="4.0" />
Line 43:     <httpRuntime targetFramework="4.0" />
Line 44:     <authentication mode="Forms">   
Line 45:       <forms loginUrl="~/" timeout="2880" />

(line 43 is in red )

On the remote computer :
* IIS7 is installed (and also IIS6, I think)
* ASP.NET 4.0 is installed
* "aspnet_regiis -ir" > installed successfully
* IIS7 > Application Pools > ASP.NET 4.0 > poining to ".NET Framework v4.0.30319"
* IIS7 > my web application > "ASP.NET 4.0" (Integrated) is chosen.
I don't know if it 's important but server's windows is Widows Server 2008 RT Enterprise 64-bit and my computer is windows 7 32-bit.

Nothing helped…