I tried them all, but when i open hyperworks desktop and i switch to hypermesh i recive the organizer error "library is closed" and the software crash. I found out in the forums other problems like this one, so i removed setting's temporary files. FIrst i recived organizer error "library is closed" when i started hyperworks desktop, next i removed in the properties the destination after the "C:\Users\Niccolo'\Desktop\Altair HW\hwdesktop\hw\bin\win64\hw.exe" and now i can open hyperworks desktop. the problem appears when i switch to Hypermesh and the programm crash. I tried them all to solve it, but it doesn't work. I have the studente version.. how can i solve my problem?