Hi David!
I managed to find the launcher log:
[2019-05-03 17:11:51.259] [DISPLAY] [main] Command line: "C:\Program Files\Rockstar Games\Launcher\Launcher.exe" -viveportApp=lanoirevr -viveportLocation "N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397" --openvr --openvrcontrollers --parentIsLauncher --rtu --disableplayerdestinationcamerazones @args.txt
[2019-05-03 17:11:51.259] [DISPLAY] [main] Working directory: C:\Program Files\Rockstar Games\Launcher
[2019-05-03 17:11:51.295] [DISPLAY] [minmode] Running in Viveport mode.
[2019-05-03 17:11:51.295] [DISPLAY] [minmode] Title Id: lanoirevr
[2019-05-03 17:11:51.295] [DISPLAY] [minmode] Location: N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397
[2019-05-03 17:11:51.295] [DISPLAY] [launcher] Opening log file.
[2019-05-03 17:11:51.371] [DISPLAY] [titlemanager] Could not get title list cache from disk; no titles known to be installed.
[2019-05-03 17:11:51.372] [DISPLAY] [fileutils] File version 1.2.4.0 (for C:\Program Files\Rockstar Games\Social Club\socialclub.dll)
[2019-05-03 17:11:51.382] [DISPLAY] [fileutils] File version 1.2.4.0 (for C:\Program Files\Rockstar Games\Social Club\socialclub.dll)
[2019-05-03 17:11:51.382] [DISPLAY] [fileutils] File version 1.0.2.1 (for C:\Program Files\Rockstar Games\Launcher\Launcher.exe)
[2019-05-03 17:11:51.383] [DISPLAY] [fileutils] Version: 1.2.4.0 | 1.0.2.1 | FFP
[2019-05-03 17:11:51.395] [DISPLAY] [ui_mainwindow] Using DPI 96,96
[2019-05-03 17:11:51.571] [DISPLAY] [idownloader] Starting download of 'http://patches.rockstargames.com/prod/launcher/launcher_online_config.xml'
[2019-05-03 17:11:51.687] [DISPLAY] [idownloader] Completed download of 'http://patches.rockstargames.com/prod/launcher/launcher_online_config.xml' (status: 0/200)
[2019-05-03 17:11:59.869] [DISPLAY] [launcher] Presence Event - Signed In and Online
[2019-05-03 17:11:59.869] [DISPLAY] [launcher] User 'deadsocietypoet' is now signed in
[2019-05-03 17:11:59.869] [DISPLAY] [launcher] Time to start up: 8623 ms
[2019-05-03 17:11:59.870] [DISPLAY] [minmode] Notifying Social Club UI about min-mode...
[2019-05-03 17:11:59.870] [DISPLAY] [minmode] Setting up Viveport title...
[2019-05-03 17:11:59.871] [DISPLAY] [idownloader] Starting download of 'http://patches.rockstargames.com/prod/launcher/title_metadata.json'
[2019-05-03 17:11:59.921] [DISPLAY] [minmode] Launch requested, but ready yet, delaying until ready.
[2019-05-03 17:11:59.931] [DISPLAY] [minmode] Now ready to attempt the launch that was previously requested.
[2019-05-03 17:11:59.931] [DISPLAY] [minmode] Attempting min-mode launch...
[2019-05-03 17:12:00.000] [DISPLAY] [launcher] Friend Event - Friends are Available
[2019-05-03 17:12:00.076] [DISPLAY] [idownloader] Completed download of 'http://patches.rockstargames.com/prod/launcher/title_metadata.json' (status: 0/200)
[2019-05-03 17:12:00.098] [DISPLAY] [titlemanager] Updating metadata for title lanoirevr.
[2019-05-03 17:12:00.099] [DISPLAY] [titlemanager] Updating metadata for title launcher.
[2019-05-03 17:12:00.099] [DISPLAY] [scuimessage] Sending title list to Social Club UI
[2019-05-03 17:12:00.099] [DISPLAY] [fileutils] File version 1.0.2.1 (for C:\Program Files\Rockstar Games\Launcher\Launcher.exe)
[2019-05-03 17:12:00.821] [DISPLAY] [fileutils] File version 402.1.0.0 (for N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397\LANoireVR.exe)
[2019-05-03 17:12:00.834] [DISPLAY] [cloudsaveop] Cloud Save sync requested for title 'lanoirevr'
[2019-05-03 17:12:00.853] [DISPLAY] [cloudsaveop] Starting cloud save enabled check for title 'lanoirevr'
[2019-05-03 17:12:00.854] [DISPLAY] [cloudsaveop] Received cloud saves enabled state for title 'lanoirevr', enabled=false
[2019-05-03 17:12:00.854] [DISPLAY] [cloudsaveop] Finished syncing cloud saves for title 'lanoirevr'
[2019-05-03 17:12:02.470] [DISPLAY] [gamelaunch] Launching game...
[2019-05-03 17:12:02.471] [DISPLAY] [gamelaunch] Path: N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397\LANoireVR.exe
[2019-05-03 17:12:02.471] [DISPLAY] [gamelaunch] Command Line: "N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397\LANoireVR.exe" -viveportApp=lanoirevr -viveportLocation N:\Spiele\Viveport\ViveApps\9fac28ae-df6f-493f-8035-3f4a5e861fdc\1533930397 --openvr --openvrcontrollers --parentIsLauncher --rtu --disableplayerdestinationcamerazones @args.txt
[2019-05-03 17:12:04.769] [DISPLAY] [gamelaunch] Game exited with code 0xc000001d
[2019-05-03 17:12:04.769] [ ERROR ] [crashdetection] Exit code 0xc000001d indicates a fatal game exit (reason: Unknown Error Code)
[2019-05-03 17:12:04.769] [ ERROR ] [error] ************************************************************************
[2019-05-03 17:12:04.769] [ ERROR ] [error] * Setting error condition
[2019-05-03 17:12:04.769] [ ERROR ] [error] * Category: 5 (ERROR_CATEGORY_EXIT_CODE)
[2019-05-03 17:12:04.769] [ ERROR ] [error] * Code: -1073741795 (0xc000001d)
[2019-05-03 17:12:04.769] [ ERROR ] [error] * Extra:
[2019-05-03 17:12:04.769] [ ERROR ] [error] * Localised: L.A. Noire: The VR Case Files wurde unerwartet beendet.
Bitte klicke unten auf „Erneut versuchen“, um das Spiel neuzustarten oder „Bestätigen“, um das Spiel zu beenden.
Solltest du weiterhin Probleme beim Ausführen des Spiels haben, kontaktiere bitte den Kundenservice von Rockstar Games unter https://support.rockstargames.com/hc/de.
[2019-05-03 17:12:04.770] [ ERROR ] [error] ************************************************************************
[2019-05-03 17:12:08.371] [DISPLAY] [cloudsaveop] Cloud Save sync requested for title 'lanoirevr'
[2019-05-03 17:12:08.392] [DISPLAY] [cloudsaveop] Starting cloud save enabled check for title 'lanoirevr'
[2019-05-03 17:12:08.393] [DISPLAY] [cloudsaveop] Received cloud saves enabled state for title 'lanoirevr', enabled=false
[2019-05-03 17:12:08.393] [DISPLAY] [cloudsaveop] Finished syncing cloud saves for title 'lanoirevr'
[2019-05-03 17:12:08.394] [DISPLAY] [launcher] StartShutdown - Now in progress
[2019-05-03 17:12:08.865] [DISPLAY] [app] Application quit requested (exit code: 0)
[2019-05-03 17:12:08.885] [DISPLAY] [cloudsaveop] Cancelling cloud sync operation for title 'lanoirevr'
[2019-05-03 17:12:09.901] [DISPLAY] [launcher] Closing log file.