error after installation

Dear,

I instal version 3.50 with code
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also instaled Nop Motion Responsive Theme.

after installation all seams oke after a period I get the folloing error: www.aa-tape.com/errorpage.htm?aspxerrorpath=/

Dit de hole installation again same happened.

to locate the problem  I turned off the custom errors mode

1. Open web.config file
2. Find out the following line <customErrors defaultRedirect="errorpage.htm" mode="RemoteOnly">
3. Replace it with <customErrors defaultRedirect="errorpage.htm" mode="Off">

after this:

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: The 'targetFramework' attribute in the <compilation> element of the Web.config file is used only to target version 4.0 and later of the .NET Framework (for example, '<compilation targetFramework="4.0">'). The 'targetFramework' attribute currently references a version that is later than the installed version of the .NET Framework. Specify a valid target version of the .NET Framework, or install the required version of the .NET Framework.

Source Error:


An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Source File: \\192.168.0.100\localuser\aatapec\Presentation\Nop.Web\web.config    Line: 50

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34248


What to do now can anybody help??

Hi,

Error Message: "We're sorry, an internal error occurred. Our supporting staff has been notified of this error and will address the issue shortly..."

To find out what went wrong you need to turn off the custom errors mode.
1. Open web.config file
2. Find out the following line <customErrors defaultRedirect="errorpage.htm" mode="RemoteOnly">
3. Replace it with <customErrors defaultRedirect="errorpage.htm" mode="Off">

Also, check Admin > System > Log for any errors.

just did

error now:

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: The 'targetFramework' attribute in the <compilation> element of the Web.config file is used only to target version 4.0 and later of the .NET Framework (for example, '<compilation targetFramework="4.0">'). The 'targetFramework' attribute currently references a version that is later than the installed version of the .NET Framework. Specify a valid target version of the .NET Framework, or install the required version of the .NET Framework.

Source Error:


An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

Source File: \\192.168.0.100\localuser\aatapec\Presentation\Nop.Web\web.config    Line: 50

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34248

You have any idee ?

Update your application pool to .net 4.0 in IIS. Most probably it's set to 2.0.

Also ensure that you have .NET 4.5 installed