If anyone is stuck at the “processing bulk data” stage, please try clearing your cache.
In game:
Esc -> Reset Settings tab -> Clear all cache files button
Launcher:
View (in the top menu bar) -> Shared cache -> Verify button
Please make sure you’re on the latest launcher version (1747682 or above). There have been important fixes for Mac deployed recently.
We also suggest that the full client is downloaded, where possible. You can enable this is the launcher settings (cog in the bottom left corner).