Ensight reader does not support "maximum time steps"
The Ensight reader in Paraview will not load Ensight case files that contain the line
maximum time steps, which is a valid line for Ensight case files. The Paraview Ensight reader does not look for that key, so when this line is encountered, it concludes the file isn't valid Ensight Gold format.
Here is an example dataset, based on one of the Ensight test datasets in VTK: ensight_test.tar.gz
The test dataset has two case files, TEST.case and TEST.bad.case. The only difference is that TEST.bad.case has the
maximum time steps line, and TEST.case does not. When trying to load TEST.bad.case, Paraview will output some errors, and no cell data will be loaded.
Open TEST.base.case in Paraview. Some errors will pop up, and no cell data will be loaded.