Abaqus CAE 2020 crashes when opened

Hello, I have a problem when opening the graphical user interface of Abaqus CAE (2020 version). When I do it, it appears the GUI screens but at the moment when I click on any button of it, it crashes. However, I don't find any problem running jobs in Abaqus through command line. This problem started after installing Abaqus in a new computer. Regarding to the license, it doesn't seem to be the problem, but I connect to it by Flexnet server and through a VPN.