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An error has occurred while loading the ReportDesigner's Workbench

Environment

Product Progress® Telerik® Reporting

Description

The following error might be seen when starting the Standalone designer: Fatal error in workbench. Now closing... An error has occurred while loading the ReportDesigner's Workbench

Solution

The problem might come from a wrong configuration in the config file of the designer. To troubleshoot the described issue, attach a Trace Listener to the designer by adding the following to Telerik.ReportDesigner.exe.config to generate a log file :

   <system.diagnostics>
        <trace autoflush="true" indentsize="4">
          <listeners>
            <add name="myListener" type="System.Diagnostics.TextWriterTraceListener" initializeData="c:\temp\StandaloneDesigner.LOG" />              
            <remove name="Default" />
          </listeners>
        </trace>
    </system.diagnostics>

Inspect the generated file for any errors. You can also send us the log file in a support ticket with the configuration file of the designer.

Another possibility for the issue is to have an invalid user.config file.

This is a file where the user preferences like connection strings, last opened files, window statuses, etc. are stored. This file can be found in the %localappdata%\Progress_Software_Corpora\ folder and there should be a subfolder called Telerik.ReportDesigner with a strong name key suffix. Inside, you should look for a folder named after the corresponding Reporting version. Here is a sample path:

Progress_Software_Corpora\Telerik.ReportDesigner.ex_StrongName_xvg2ahozm2u22wxtsw2egsvlddrzt5hj\16.0.22.225\user.config

Note taht for the older versions, the main folder may be Telerik_AD, Telerik, or Telerik_EAD

Rename or move these files so the designer would load with default values instead of reading them from these configuration files.

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