The following warning appears in the Output Log when opening any project in editor:
LogFeaturePack:Warning: Error in Feature pack C:/Program Files (x86)/Epic Games/4.13/FeaturePacks/TP_VirtualRealityBP.upack. Failed to parse manifest: Comma token expected, but not found. Line: 31 Ch: 13
RESULT:
Feature Pack warning appears in the Output Log.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-34059 in the post.