Simulation not starting

Hi Everyone,

 

A weird issue is popping up lately, randomly: When we set up the model and start the simulation (Create Database >> Prepare and Solve OR Start Analysis), then NOTHING happens:

 - either the solver window pops up and remains empty, or

 - even the solver window doesn't pop up, in this case there is not trace in the queue of the job at all..

 

Has anyone had this issue before? How could you solve it?

Thanks!