The problem is that I was able to open it a first time and then I couldn’t do it anymore… I had to rerun the simulation and rewrite the .xmf file!
For now I will just save it with the .pvd format after opening it the first time, since this seems to work…
Wild guess here. Assuming Marta isn’t being fooled, the file is opened once. ParaView then (on closing) will write a configuration file. The file won’t open again. Issue with something in the configuration file? One way to test, Marta, is to blow away configuration files. Edit/ Reset to Default Settings. Backup the files please. If this fixes it, Kitware will probably want these files.