Editor closes if Instanced Stereo is off

If I turn off Instanced Stereo in our project (to prevent the lightmap density view from flickering) then the editor closes right after starting up: I can see in the taskbar that it creates the windows (main one, one for project settings, one for content browser) but those windows never get any content before the editor quits. The log file has the following errors:

Failed to load 'aqProf.dll' (GetLastError=126)
File 'aqProf.dll' does not exist
Failed to load 'VtuneApi.dll' (GetLastError=126)
File 'VtuneApi.dll' does not exist
Failed to load 'VtuneApi32e.dll' (GetLastError=126)
File 'VtuneApi32e.dll' does not exist
Display: Failed to find resolution value strings in scalability ini. Falling back to default.
(...)
Failed to load 'OVRPlugin.dll' (GetLastError=126)
File 'OVRPlugin.dll' does not exist

But that’s about it. Weirdly the last line is
“Windows GetLastError: The operation completed successfully. (0)”
instead of the usual stuff like
“LogExit: Exiting.”
“Log file closed”