I installed the telerik extensions and used it to create a new "Telerik MVC" project.  Compiling warns about dll conflicts and if you run the base project it errors with a similar error.

Should I assume Telerik is not quite stable with studio 2019?

Hello Robert,

Thank you for writing to us.

Our project templates are compatible with Visual Studio 2019. I tied to reproduce the problem in Visual Studio 2019 (16.1.1) but I was not able. Could you please let us know what is the exact version of your Visual Studio? It will be really convenient if your copy the whole information from Help | About Microsoft Visual Studio dialog.

Regards,
Vesko
Progress Telerik

Microsoft Visual Studio Professional 2019
Version 16.1.3
VisualStudio.16.Release/16.1.3+29009.5
Microsoft .NET Framework
Version 4.7.03190

Installed Version: Professional

Visual C++ 2019   00435-20310-48373-AA795
Microsoft Visual C++ 2019

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

Application Insights Tools for Visual Studio Package   9.1.00429.1
Application Insights Tools for Visual Studio

ASP.NET and Web Tools 2019   16.1.429.50124
ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2012   16.1.429.50124
For additional information, visit https://www.asp.net/

ASP.NET Web Frameworks and Tools 2019   16.1.429.50124
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   16.1.429.50124
Azure App Service Tools v3.0.0

Azure Data Lake Node   1.0
This package contains the Data Lake integration nodes for Server Explorer.

Azure Data Lake Tools for Visual Studio   2.3.9000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   16.1.429.50124
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.3.9000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   3.1.1-beta4-19281-06+58a4b1e79aea28115e66b06f850c83a3f1fcb6d3
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Fabric.DiagnosticEvents   1.0
Fabric Diagnostic Events

GitHub.VisualStudio   2.8.0.6762
A Visual Studio Extension that brings the GitHub Flow into Visual Studio.

IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

Microsoft Azure HDInsight Azure Node   2.3.9000.0
HDInsight Node under Azure Node

Microsoft Azure Hive Query Language Service   2.3.9000.0
Language service for Hive query

Microsoft Azure Service Fabric Tools for Visual Studio   2.5
Microsoft Azure Service Fabric Tools for Visual Studio

Microsoft Azure Stream Analytics Language Service   2.3.9000.0
Language service for Azure Stream Analytics

Microsoft Azure Stream Analytics Node   1.0
Azure Stream Analytics Node under Azure Node

Microsoft Azure Tools   2.9
Microsoft Azure Tools for Microsoft Visual Studio 0x10 - v2.9.20419.2

Microsoft Continuous Delivery Tools for Visual Studio   0.4
Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   1.0
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.1
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Node.js Tools   1.5.10424.1 Commit Hash:c3ce0ae0b29c0b3a755ffc12f8a685fe7ddd3600
Adds support for developing and debugging Node.js apps in Visual Studio

NuGet Package Manager   5.1.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

ResourcePackage Extension   1.0
ResourcePackage Visual Studio Extension Detailed Info

ResourcePackage Extension   1.0
ResourcePackage Visual Studio Extension Detailed Info

SQL Server Data Tools   16.0.61904.23160
Microsoft SQL Server Data Tools

Telerik ASP.NET MVC VSExtensions   2019.2.503.3
Progress® Telerik® UI for ASP.NET MVC Visual Studio extensions

Test Adapter for Boost.Test   1.0
Enables Visual Studio's testing tools with unit tests written for Boost.Test.  The use terms and Third Party Notices are available in the extension installation directory.

Test Adapter for Google Test   1.0
Enables Visual Studio's testing tools with unit tests written for Google Test.  The use terms and Third Party Notices are available in the extension installation directory.

ToolWindowHostedEditor   1.0
Hosting json editor into a tool window

TypeScript Tools   16.0.10506.2004
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   3.1.1-beta4-19281-06+58a4b1e79aea28115e66b06f850c83a3f1fcb6d3
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.4 for F# 4.6   16.1.0-beta.19253.3+42526fe359672a05fd562dc16a91a43d0fe047a7
Microsoft Visual F# Tools 10.4 for F# 4.6

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Tools for CMake   1.0
Visual Studio Tools for CMake

Visual Studio Tools for CMake   1.0
Visual Studio Tools for CMake

Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

Visual Studio Tools for Kubernetes   1.0
Visual Studio Tools for Kubernetes

Hello Robert,

There is a bug in the trial version of UI for ASP.NET MVC related to this problem which is now fixed. We will ship it in our official release tomorrow.

Please, give it another try with the upcoming version and let us know if the problem is resolved.

Regards,
Vesko
Progress Telerik