Hi @HalaAbdelmaksoud
Sorry to hear that you ran into issues when setting up a new Urban model. Can you explain which option you chose to set up the model (example city, USA Default template, blank model or a model from a FGDB)? Also, does the error also show up after trying again? Does it show up when choosing a different option (e.g. when creating a blank Urban model)?
Thanks in advance for the additional information.
Till