Could not load file or assembly 'Telerik.SvgIcons, Version=1.0.0.0, Culture=neutral, PublicKeyToken=20b4b0547069c4f8'

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John
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John asked on 02 Aug 2023, 10:42 PM

I'm getting this message whenever I try and load a page containing a grid.  I tried installing the Telerik.SvgIcons and Telerik.FontIcons packages, but both installations fail because of an error when installing System.Net.Http.  Is there anyway I can just install the two files so that I can resurrect my .NET MVC 4.7.2 application?

The error I get while install the packages is:

Error Failed to add reference to 'System.Net.Http'.
The operation is not allowed because currently this object is not parented.

System.Net.Http version 4.2.0.0 is installed, but installing the most recent version 4.3.4 fails, whether or not there is a reference to 4.2.0.0.

Samuel
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commented on 25 Aug 2023, 01:23 PM

I am having the exact same issue. Were you ever able to find a solution? 
Samuel
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commented on 25 Aug 2023, 01:33 PM

What a nightmare upgrading these Telerik controls has been. Days wasted. Anyways, I was able to solve this by going to my csproj and commenting out the existing line to System.Net.Http. Once I did that I was able to add the Telerik.SvgIcons and Telerik.FontIcons packages that I shouldn't have had to add to begin with. So tired of these breaking issues every time I update Telerik.
Ivan Danchev
Telerik team
commented on 30 Aug 2023, 12:19 PM

Samuel,

Thank you for the feedback. I understand the frustration around the breaking changes. Indeed there were a lot them in the late 2022 and early 2023 releases. However, I'd like to point out that we haven't made so many changes with the idea to make it hard for our customers when upgrading, on the contrary, the purpose was modernization of the themes and streamlining their customization in the long run. More details you can find in this blog post: https://www.telerik.com/blogs/improvements-coming-telerik-kendo-ui-themes-2022.

The good news are that we expect fewer breaking changes in R3 2023 and R1 2024, compared to the 2022 and early 2023 releases.

We hope that with most of the bigger changes already in place, your next upgrade would be less of a challenge.

No answers yet. Maybe you can help?

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