Hello, i have last version (2021 Standard) downloaded from draftsight website, and properly activated, i have reinstalled it 4 times already and it does not resolve my problem in any wat, also downloaded latest C++ Redist. 2015-2019 and it does not fix anything either. currently my tab where i should be abble to menage many dwg. files not showing up, also command "hidedrawingtabs" and "drawingtabs" not working, there is only " SDI=1 ". Could anyone help? I'm unnable to work on any of my projects right now because of this issue