Resposta:
Após o cálculo ser interrompido devido à instabilidade, será apresentada uma janela com "Erros de cálculo e mensagens". For each displayed message, you can see a yellow arrow on the screen which will guide you to the location of the instability.
In most cases, the error message contains also a FE mesh node number.
FE mesh nodes can be found also by using the menu "Edit" → "Find via Number".
