I had 3.5.0 installed. When I press on Update, I gert an immediate screen with the right most icon highlighted-Updater is loading. Never saw the three leftmost icons highlight. The text bar showing the progress only says “Deleting old files”. Next is greyed out. The updater then freezes without any indication (no error messages) that anything further has occurred. The screens behind the updater screen are all black and my desktop is frozen. After several minutes I restarted computer and the phplist is gone from my server. I have to manually download the zip file and reinstall, which takes hours. Same thing happened with 3.4.9 which I also manually installed.
Anyone else having this problem?