******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Hello, I am trying to use the "extract" module to sample some data on a boundary ID. In standalone mode, the module works as intended but I am encountering segmentation fault while using it in FieldCovert checkpoints. I am supplying the settings as a separate file and this is my setup: <NEKTAR> <FILTERS> <FILTER TYPE="FieldConvert"> <PARAM NAME="OutputFile">session.fld</PARAM> <PARAM NAME="OutputFrequency">2</PARAM> <PARAM NAME="Modules">extract:bnd=1</PARAM> </FILTER> </FILTERS> </NEKTAR> Can someone please point out what 's wrong in this setup ? Regards, Ishan PGR