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Update 35: crash after starting the game (&fix)
Update 35 had the immediate effect of breaking the game for me - on two different (!) Windows machines the game kept crashing every time immediately after clicking on "start" in the launcher.
I was able to fix this by renaming the UserSettings.txt (which resides in Documents/Eleder Scrolls Online/live or deep in some Steam folder) to UserSettings.txt.bak
This causes the game to create a fresh settings file. Probably it is enough to change a particular setting, but since there are a lot of settings I didn´t feel like experimenting.
Just in case someone has the same problem.