Thanks once more Joseph. I did just that. Result: with no add-ons enabled, everything’s perfect, no crash at all. With only a few add-ons enabled, the crash happens but later in time, about two minutes after logon, and it’s independent of what I am doing. With all add-ons enabled, it happens right after logon, just after NVDA starts for the first time and says “taskbar”. I suppose this is complicated, maybe I should learn to live with it, I’ve bothered you enough already. Thousands of thanks indeed!