Versions of NoiseMap up to 5.1.5 have a limit of 250 characters on the total length of the scenario name and the scenario description. If you have very long scenario names or very long descriptions, you could exceed this limit. In this case the database previewer may not display the scenario tree correctly.
We suggest that you open the scenario manager and shorten either/or the scenario name and the description, which should fix the problem.
(NB it is also possible to use the scenario manager to hide scenarios.)
