License issue

fiplan · February 17, 2026, 9:26am

"Hello everyone,

Could someone help me with a license issue?

Whenever I start my application, I get the error: “A valid license could not be granted for the type ‘RemObjects.Hydra.NonVisualPlugin’. Please contact the manufacturer of the component for more information.”

I have already tried cleaning the “obj” and “bin” folders, but the error persists [on a .NET Framework WinForms project]. What I find totally confusing is that my solution contains several different projects compiled as DLLs; some can be loaded at runtime without any issues, while others throw this exception during loading. (I am using System.ComponentModel.Composition to load the plugins.)"

EvgenyK · February 17, 2026, 10:24am

Hi,

Check that you have licenses.licx included as embedded resource into your plugin project, like

    <EmbeddedResource Include="licenses.licx" />

it should contain this line:

RemObjects.Hydra.NonVisualPlugin, RemObjects.Hydra

fiplan · February 17, 2026, 10:31am

Just found same solution 10 minutes ago, I copied “licenses.licx“ from some working project into a project that throws an exception, it worked!

After that checked Git what is the diff. between “before” and “after”, you are right, it is something about “EmbeddedResource”