Hi Nikesh,

I have tested FieldConvert with the input files you provided on a build of Nektar++ 5.0.1 running on Ubuntu 18.04 and the command that you have provided below ("FieldConvert -m addfld:fromfld=geom.fld:scale=1 geom.xml geom.fld geom2.fld”) runs successfully and geom2.fld is created.

Can you provide some further details on your Nektar++ 5.0.1 build? What platform are you using? Did you build from source or install from packages? If you built from source, can you provide the link to the source archive you downloaded? If you can also provide us with your CMake build configuration, that could also be very helpful in identifying the problem.

Thanks,
Jeremy

On 16 Feb 2021, at 13:14, Nikesh Yadav <nikeshspartan@gmail.com> wrote:

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Dear All,
I have prepared files for comparison between 4.4 and 5.01 FieldConvert -m addfld feature. I am attaching the field (geom.fld) and mesh file (geom.xml). 

Using nektar++-4.4.1 i can successfully add for example 
FieldConvert -m addfld:fromfld=geom.fld:scale=1 geom.xml geom.fld geom2.fld
output:-  Writing: "geom2.fld" (0s, XML)

Using nektar 5.01. i am getting an error 
FieldConvert -m addfld:fromfld=geom.fld:scale=1 geom.xml geom.fld geom2.fld
Segmentation fault

--
Thanks and regard
Nikesh, Ph.D.
Assistant at Aerodynamics Dept,  MEiL
Warsaw University of Technology, Warsaw, Poland
Contact: - +48 22 234 7523 
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