CFD HyperMesh Analysis can't lunch

Hi. I am new to cfd analysis, so i follow the tutorial for running the CFD of simple Venturi-pipe, at first run when i have a lot of mistakes in parameters assign the simulation runs oky and the results were not as I expect, so I've adapt the model second time(like in tutorial), i  try to lunch the analysis and they wont start, so i try several times but every single time is the same, except the firs time