******************* 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. ******************* Hi all, I am new to Nektar++, I was running tutorial: Incompressible Flow Simulation. When I tried to restart simulation by running code in 6.5 Optional additional tasks (Exercise1), it raised error Initial Conditions: - Field u: from file cyl2DMesh.fld - Field v: from file cyl2DMesh.fld - Field p: from file cyl2DMesh.fld Fatal : Level 0 assertion violation m_timestep < 0 I followed all instructions before, I’m not sure where I was wrong. It’s really confusing. Could you please help me with that? Thank you so much and have a good day. Best, Zhikang Dong