Last Updated: 21 Aug 2020 04:58 by ADMIN
Release R3 2020
Created on: 25 Jun 2020 14:54
Category: UI for WPF
Type: Bug Report
Error occurred while restoring NuGet packages for a net core project when the installation of UI for WPF is not on C drive

When creating a NetCore project with NoXaml binaries via Telerik VSExtenstions for WPF and the installation of UI for WPF suite is not on C drive the following error occurs: "Error occurred while restoring NuGet packages: The local source 'C:\Program Files (x86)\Progress\Telerik UI for WPF R2 2020\ToolboxNugetPackages\' doesn't exist."


Posted on: 29 Jun 2020 14:30

Hello Ron, 

I am sorry to hear about the issue you are experiencing. 

Indeed, I was able to reproduce it even when the installation is on C, but after I was hit once the same problem. As a workaround on my side helped the following: 

1. Removing the nugget from the project

2. Clearing NugetManager cache  (from Tools => Nuget Package Manager =>Package Manager Settings =>click Clear All Nuget Cache(s))

3. Restarting the computer

4. Adding the missing folder: C:\Program Files (x86)\Progress\Telerik UI for WPF R2 2020\ToolboxNugetPackages

5. Adding the new nuget package

Please give this a try and let me know if this works for you.

Also could you please give me more detailed steps to reproduce: you open an existing project (NetCore, with NoXaml binaries?), using Visual Studio (2019, 2019 Preview?), have you open the ToolBox after the new installation of Telerik UI for WPF in VS 2019 Preview and before opening the project; how you upgrade to the new version - using the Telerik NuGet server or by using a local package source?

Thank you in advance for your cooperation.


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Ron Barone
Posted on: 28 Jun 2020 13:59

I now take my last post back.  I thought this worked.  All it ended up doing is downloading files, then restarted visual studio.  Then it didnt actually update my project references.  They are still at 2019.1.220

Same story, UI for WPF NoXAML.


Ron Barone
Posted on: 28 Jun 2020 13:56

Mine is installed on the C drive, and it still is missing this folder.  I just created the missing folder and at least that got me around the problem and I was able to update via nuget.