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Fiddler Classic
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J
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J asked on 05 Feb 2021, 06:15 AM
every time i try to open up fiddler it says this

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Awww, Fiddlesticks!
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Fiddler has encountered an unexpected problem. If you believe this is a bug in Fiddler, please copy this message by hitting CTRL+C, and submit a bug report at http://www.telerik.com/forums/fiddler.

Could not load file or assembly 'System.ComponentModel.Composition, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.

Type: System.IO.FileNotFoundException
Source: Fiddler
   at Fiddler.Proxy.()

   at Fiddler.Proxy..ctor(Boolean isPrimary, ProxySettings upstreamProxySettings) in C:\Jenkins\Fiddler_Windows\workspace\FiddlerCore\FiddlerCore.Shared\Common\Core\Proxy.cs:line 210

   at Fiddler.frmViewer.‹•(String[] ˆ•) in C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Fiddler.Shared\Viewer.cs:line 3339

   at Fiddler.frmViewer.‡•(String[] ˆ•) in C:\Jenkins\Fiddler_Windows\workspace\Fiddler2\Fiddler.Shared\Viewer.cs:line 3164


Fiddler v5.0.20204.45441 (x64 AMD64) [.NET 4.0.30319.42000 on Microsoft Windows NT 10.0.15063.0] 
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OK   
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pls help

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Nick Iliev
Telerik team
answered on 05 Feb 2021, 12:16 PM

Hi J R,

 

What is the operating system on which you are trying to run Fiddler? Also, check your NET version installed on the OS.

Could you try reinstalling your FIddler by downloading and installing (both on the affected machine) the latest version from the following link: https://www.telerik.com/download/fiddler

 

 

Regards,
Nick Iliev
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Leo
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answered on 05 Apr 2021, 03:14 AM
[quote]Nick Iliev said:

Hi J R,

 

What is the operating system on which you are trying to run Fiddler? Also, check your NET version installed on the OS.

Could you try reinstalling your FIddler by downloading and installing (both on the affected machine) the latest version from the following link: https://www.telerik.com/download/fiddler happy wheels

 

 

Regards,
Nick Iliev
Progress Telerik

Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.

[/quote]

That is exactly what I was thinking. Thank you for the reply.

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Nick Iliev
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Leo
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