create a user account w/ Chinese or Japanese Hanzi on one of the nDisplay render node
then try to launch nDisplay as usual
nDisplay fail to launch
after switching to an English username, nDisplay could launch correctly.
NOTE: based on the log, SB listener seems try to copy files into <userName>/directory but when the user name contains non-ASCII chars, it seems failed to do so.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-158065 in the post.