Dear Kamil, I think you should not be using the ‘/‘ one the end of the .fld file. Regards, Spencer. On 10 Nov 2014, at 21:17, Kamil ÖZDEN <kamil.ozden.me@gmail.com<mailto:kamil.ozden.me@gmail.com>> wrote: Dear All, When I exectute FldToVtk to get a .vtu file from a .fld/ directory it works without problem and gives me a .vtu file. But when I try to get a .dat file with FldToTecplot by typing ./FldToTecplot Re_1000_v2_2.xml Re_1000_v2_2.fld/ it doesn't give a .dat file and also doesn't give any error message. What may be the reason for this problem? Regards, Kamil _______________________________________________ Nektar-users mailing list Nektar-users@imperial.ac.uk<mailto:Nektar-users@imperial.ac.uk> https://mailman.ic.ac.uk/mailman/listinfo/nektar-users Spencer Sherwin McLaren Racing/Royal Academy of Engineering Research Chair, Professor of Computational Fluid Mechanics, Department of Aeronautics, Imperial College London South Kensington Campus London SW7 2AZ s.sherwin@imperial.ac.uk<mailto:s.sherwin@imperial.ac.uk> +44 (0) 20 759 45052