When running an Nuke or Mari in NonCommercial mode you may receive a pop up stating that this version has now expired:
Each version of Nuke and Mari is able to run in Non-Commercial mode for 6 months from when it is built/released. After 6 months the Non Commercial functionality expires and that version will no longer run in Non Commercial mode and will display a warning.
You can continue working with Nuke or Mari Non-Commercial by updating to the latest version. You can access the latest downloads from the following page: