I have a report that uses custom assemblies and I export it through the ReportProcessor class in my .NET application.

For the reporting engine to resolve the custom assemblies, I had to pass an IConfiguration instance through its constructor where the custom assembly is referenced in the assemblyReferences element - Configuration for the ReportProcessor in .NET.

This approach does not work with the latest version of Telerik Reporting(18.2.24.924). I get errors that the assembly and the used types are not registered in the configuration file when I render the report.