******************* 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 all, This is Hadi Seyedi from Michigan State University. I am a PhD student at ME department and I am using NEKTAR++ to perform my 2D incompressible N-S simulations. When I want to use the Stream function module in FiledConvert, I am getting the below error. I could use the other modules easily, but this one (streamfunction module) doesn't work for my cases. Would you please help me in this regard? Thank You in advance, Hadi Error: Fatal : Level 0 assertion violation Variable index out of range. terminate called after throwing an instance of 'Nektar::ErrorUtil::NekError' what(): Level 0 assertion violation Variable index out of range. [Hadi-PC:05963] *** Process received signal *** [Hadi-PC:05963] Signal: Aborted (6) [Hadi-PC:05963] Signal code: (-6) [Hadi-PC:05963] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0x12890)[0x7f86a3e80890] [Hadi-PC:05963] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f86a3abbe97] [Hadi-PC:05963] [ 2] /lib/x86_64-linux-gnu/libc.so.6(abort+0x141)[0x7f86a3abd801] [Hadi-PC:05963] [ 3] /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x8c957)[0x7f86a46cf957] [Hadi-PC:05963] [ 4] /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x92ab6)[0x7f86a46d5ab6] [Hadi-PC:05963] [ 5] /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x92af1)[0x7f86a46d5af1] [Hadi-PC:05963] [ 6] /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0x92d24)[0x7f86a46d5d24] [Hadi-PC:05963] [ 7] /home/hadi/NEKTAR/nektar++-5.0.0/build/dist/lib64/libLibUtilities.so.5.0.0(+0x1b8c32)[0x7f86a5516c32] [Hadi-PC:05963] [ 8] /home/hadi/NEKTAR/nektar++-5.0.0/build/dist/lib64/libLibUtilities.so.5.0.0(+0x1b9058)[0x7f86a5517058] [Hadi-PC:05963] [ 9] /home/hadi/NEKTAR/nektar++-5.0.0/build/dist/lib64/libFieldUtils.so.5.0.0(_ZN6Nektar10FieldUtils5Field17SetUpFirstExpListEib+0xec5)[0x7f86a5f8f305] [Hadi-PC:05963] [10] /home/hadi/NEKTAR/nektar++-5.0.0/build/dist/lib64/libFieldUtils.so.5.0.0(_ZN6Nektar10FieldUtils16ProcessCreateExp7ProcessERN5boost15program_options13variables_mapE+0x43d)[0x7f86a5fb61cd] [Hadi-PC:05963] [11] FieldConvert(_Z9RunModuleSt10shared_ptrIN6Nektar10FieldUtils6ModuleEERN5boost15program_options13variables_mapEb+0x3f)[0x55f8f55093af] [Hadi-PC:05963] [12] FieldConvert(main+0x172c)[0x55f8f550587c] [Hadi-PC:05963] [13] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f86a3a9eb97] [Hadi-PC:05963] [14] FieldConvert(_start+0x2a)[0x55f8f5508d3a] [Hadi-PC:05963] *** End of error message *** Aborted (core dumped)