Lightroom just shuts down after I delete a photo. It does not happen regularly but I would say in like 80% cases.
Then I cannot export any photo. The usual export window with all the options is not appearing. It does not do anything.
I tried unchecking "show add photo screen" and "Graphic processor"
Please try the below steps that might help:
Reset Lightroom preferences by holding the shift + option (Mac) or shift+alt (Windows) while launching Lightroom.
Try to use a new Lightroom catalog.
Try to use Lightroom in a new user account
Please share the result with us.
It looks like reinstalling helped. Exporting works normally and the app did not crash after deleting a photo. Hopefully it will stay like that and it is an inconvenience that you need to reinstall the whole app after a new update.