MissingManifestResourceException was unhandled

Could not find any resources appropriate for the specified culture or the neutral culture.  Make sure "PostProcessing.ConfigurationForm.resources" was correctly embedded or linked into assembly "PostProcessing" at compile time, or that all the satellite assemblies required are loadable and fully signed.

There are many articles related to this one but they all point to a different solution than the problem I had, so I figured someone else might run into this

you can get this exception if you declare a class before the code of one of your forms

This will generate the error:

public class SomeTestClass {...}
...
public partial class ConfigurationForm : Form ...


The fix is simple, either move your class after the Form class, or (better yet) move it out to it's own file