Ansys Employee

Hi Mehdi, 

This likely could be related to the local computer. You might want to restart the computer and see if this issue persists. Check the reaction mechanism in notepad to make sure it looks good. 

There could also be a good chance CFD solution export is corrupt. Check with another test case. I hope you are using the newer versions. If all else fails, for a quicker solution, I would suggest to uninstall and reinstall the latest release.