Limitations when rendering CAD drawings
This limitation has been eliminated in v20.7. Do not set assembly binding redirect in case you’re using the v20.7 and higher.
Rendering CAD drawings requires adding assembly binding redirect
When rendering CAD drawings using GroupDocs.Viewer it is required to add the following assembly binding redirect to your project app.config or web.config files. The next example shows the required assembly binding redirect when rendering CAD drawings with GroupDocs.Viewer for .NET 20.6.1.
<configuration>
<!--...-->
<runtime>
<!--...-->
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<!--...-->
<dependentAssembly>
<assemblyIdentity name="Aspose.PDF" publicKeyToken="716fcc553a201e56" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-20.5.0.0" newVersion="20.5.0.0"/>
<publisherPolicy apply="no"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>