--- title: "Solution for this Sitefinity Feather Error: No parameterless constructor defined for this object." description: "The solution to this problem is suprisingly simple: just exclude the file containing the class from your project." image: https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-plain-crash-orange.jpg --- - [About](https://www.inalign.com/about-us) - [Code](https://www.inalign.com/custom-development) - [Sitefinity](https://www.inalign.com/sitefinity-development) - [Blog](https://www.inalign.com/sitefinity) - [Contact Us](https://www.inalign.com/contact-us/) # Solution for this Sitefinity Feather Error: No parameterless constructor defined for this object. by [Gregg Crystal](https://www.inalign.com/sitefinity/author/gregg-crystal) Dec 06, 2016 Have you seen this error? ![sf-feather-dies-01.png](https://www.inalign.com/hs-fs/hubfs/BlogSitefinity/sf-feather-dies-01.png?width=750&height=341&name=sf-feather-dies-01.png) This is an error in Sitefinity Feather that can bring down your site during development. What's the solution? It's even easier than you could ever imagine. Simply exclude the following file from your project: **/App\_Start/RazorGeneratorMvcStart.cs** The problem arises when the PrecompiledMvcEngine view engine [does not have a parameterless constructor](http://knowledgebase.progress.com/articles/Article/No-parameterless-constructor-defined-for-this-object-exception-after-Feather-upgrade).   For those searching, here's the text of the error: ``` No parameterless constructor defined for this object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.MissingMethodException: No parameterless constructor defined for this object. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. ``` [![Ready to Supercharge Your Sitefinity Project](https://no-cache.hubspot.com/cta/default/413787/04646b54-51ba-42b1-95ad-140ebc8c1440.png)](https://cta-redirect.hubspot.com/cta/redirect/413787/04646b54-51ba-42b1-95ad-140ebc8c1440) ### Related Posts [![10 Sitefinity Features Marketers Can Easily Use with Any Website](https://www.inalign.com/hubfs/Inalign_March2018/Layout/sitefinity-background-supercharge-4.jpg)](https://www.inalign.com/sitefinity/10-sitefinity-features-marketers-can-easily-use-with-any-website) [10 Sitefinity Features Marketers Can Easily Use with Any Website](https://www.inalign.com/sitefinity/10-sitefinity-features-marketers-can-easily-use-with-any-website) [![What PHP Developers Need to Know When Working With Sitefinity](https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-plain-sf-people-at-computers-blue.jpg)](https://www.inalign.com/sitefinity/what-php-developers-need-to-know-when-working-with-sitefinity) [What PHP Developers Need to Know When Working With Sitefinity](https://www.inalign.com/sitefinity/what-php-developers-need-to-know-when-working-with-sitefinity) [![Running Sitefinity Locally Within IIS on Windows 10](https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-plain-charts-blue.jpg)](https://www.inalign.com/sitefinity/running-sitefinity-locally-within-iis) [Running Sitefinity Locally Within IIS on Windows 10](https://www.inalign.com/sitefinity/running-sitefinity-locally-within-iis) [![Speeding Up Sitefinity Development: Inline Editing](https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-development-blue.jpg)](https://www.inalign.com/sitefinity/speeding-up-sitefinity-development-inline-editing) [Speeding Up Sitefinity Development: Inline Editing](https://www.inalign.com/sitefinity/speeding-up-sitefinity-development-inline-editing) [![Solution to the Sitefinity Error: The located assembly's manifest definition does not match the assembly reference.](https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-crash-org.jpg)](https://www.inalign.com/sitefinity/sitefinity-error-assembly-manifest-does-not-match) [Solution to the Sitefinity Error: The located assembly's manifest definition does not match the assembly reference.](https://www.inalign.com/sitefinity/sitefinity-error-assembly-manifest-does-not-match) [![How to Customize Module Builder Widget Templates with Conditional Statements](https://www.inalign.com/hubfs/BlogSitefinity/sf-hero-plain-charts-orange.jpg)](https://www.inalign.com/sitefinity/how-to-customize-module-builder-widget-templates-with-conditional-statements) [How to Customize Module Builder Widget Templates with Conditional Statements](https://www.inalign.com/sitefinity/how-to-customize-module-builder-widget-templates-with-conditional-statements) [More](https://www.inalign.com/sitefinity/topic/sitefinity) --- ### Subscribe to Our Blog --- ### Topics - [Recent](https://www.inalign.com/) - [Inbound Marketing](https://www.inalign.com/topic/inbound-marketing) - [Technology](https://www.inalign.com/topic/tech-marketing) - [Manufacturing](https://www.inalign.com/topic/industrial-manufacturing) - [Energy](https://www.inalign.com/topic/retail-energy) - [Sitefinity](https://www.inalign.com/sitefinity) --- [![5 Conversion Killers Every Marketer Should Avoid](https://no-cache.hubspot.com/cta/default/413787/80197558-1902-4342-bb36-b0d3da7222ec.png)](https://cta-redirect.hubspot.com/cta/redirect/413787/80197558-1902-4342-bb36-b0d3da7222ec) ## This Post Was Written by Gregg Crystal CEO and Founder of Inalign, Inc. (www.inalign.com), a full stack Software Development firm specializing in building web and line of business applications. We focus on .NET, Angular, SQL Server, and Sitefinity. Connect with me: ### About Inalign [Visit Inalign.com](https://www.inalign.com) ### Visit Us On LinkedIn [Visit LinkedIn](https://www.linkedin.com/company/inalign-inc) ### Check Out Our Portfolio [Visit Portfolio](https://www.inalign.com/Portfolio/portfolio-home/) ### Get a Free Assessment ![inaligngraylogo](https://www.inalign.com/hs-fs/file-1175323414-png/Inalign/Images/inaligngraylogo.png) ## 800.602.9947 - [Code](https://www.inalign.com/custom-development) - [Sitefinity](https://www.inalign.com/sitefinity-development) - [Blog](https://www.inalign.com/sitefinity) - [About](https://www.inalign.com/about-us) ## ABOUT INALIGN Inalign is a full stack Software Development firm specializing in building web and line of business applications. We focus on .NET, Angular, SQL Server, and Sitefinity. 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