So I've had this problem with the launcher crashing on startup since Patch 3, uninstalled the game for a while to wait until Patch 4 dropped and then reinstalled it, and it's still persisting for me. I followed the guidelines in this thread:https://larian.com/support/faqs/launcher-crashing_63
Couldn't really fix it. Tried reinstalling the .Net Core redistributable through the link in that thread, and it didn't work. All my drivers are updated, and the firewall/anti-virus doesn't block it either. It's not hampering my ability to actually play, since I'm still able to open the game directly through the DX11 executable (the Vulkan one just crashes in the same way) but I figured that it may be useful to just include the event viewer log if it helps figure out the issue?