Visual Assert cannot find my test class

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Hi all,

I have recently installed Visual Assert which works very well for me when im creating new programs, but I am working on a bigger project which im hoping to do automatic testing on. My problem is that when I add a test class to the existing project im working on Visual Assert cannot find the test: "Selection does not include any test item" and also Test Explorers info-line says "No tests available". Does anyone have an idea on how to solve this?

EDIT: And when i hover over the project in Test Explorer is says: "The process exited without registrering with the agent - this may be due to the moduale not containing any test fixtures".