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An Error Has Occurred While Loading the ReportDesigner's Workbench


Product Progress® Telerik® Reporting


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


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:

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

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:


For the older versions of Telerik Reporting the main folder may be Telerik_AD, Telerik, or Telerik_EAD.

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

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