I was running into an issue where the launcher was tossing am ’ unimplemented function msdelta.dll.ApplyDeltaW’ error. Launcher stayed up and clients launched, but it was annoying.
The updater is unable to update the launcher due to a missing component in wine. unimplemented function msdelta.dll.ApplyDeltaW, aborting This results in a ever growing squirreltemp directory. Manually cleaning is required at this point in time (January 2024). A fix for this behavior is being worked on: make the updater detect wine and do a full update.
Took a quick look through the winetricks verbs available and found this:
Running
winetricks msdelta
for the wineprefix seems to have fixed the issue. Will monitor for some time to see if disk usage keeps growing, but at least the client does not error out on me when it tries to run an update.