Impossibility to open a project

Impossibility to open a project  which has runned some time (and has accumulated a large translation). No error message only nothing happen when double clicking the project or moving to the file view.

But it works fine on my 2nd computer after transferring the project files. I use  Studio2017SR1.

I tried to uninstall and reinstall Trados on my first computer but I was (again) suprised to see that my old projects files had been kept and that it did no work.

Thanks in advance if you have suggestions.

Francis