We want purchase telerik reporting but....

[David]

Hi,
Why show me this error?
"Error loading extension type with name Telerik.Reporting.ExcelRendering.Excel97.ExcelReport, Telerik.Reporting, Version=5.3.12.119 Culture=neutral, PublicKeyToken=a9d7983dfcc261be.
The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)"
This happend when i want view a report.
We are do a testing to telerik, we want to purchase it. 
This error is because we have the trial version?.

Sorry for my english language, I from Colombia.

Thanks.

[Steve]

Hi David,

Judging by your download history, you've only downloaded the latest Q1 2012 version (6.0.12.215), however in your error message the referenced version is 5.3.12.119. Please run the Upgrade Wizard which would update all Telerik Reporting references to the latest version, you can also check whether you have not manually entered incorrect versioning.

Regards,
Steve
the Telerik team

[David]

Yes Steve, but in the company where I work are testing 5.3.12.119 version of telerik reporting.
We need use this: http://www.telerik.com/help/reporting/device-information-settings-excel.html, I followed all the steps to configuration in the web.config  
and this is the error:
Thanks Steve. 

[Steve]

Hi David,

There must be a mismatch between the version you have specified in the Telerik Reporting Configuration Section and the version of the Telerik Reporting assemblies you're using. Please make sure the version matches.

Greetings,
Steve
the Telerik team