ファイル名に日本語の文字が入っていたため、SteamVRが起動しない方がいたようです。
現在はその部分を削ってみたので恐らくSteamVRが起動すると思われます。
それでもSteamVRが起動しない方は連絡してくれると助かります。

 We've received reports that the game won't boot up through SteamVR for some people, and we now know it's because the game's filename had a Japanese unicode character in it. (The exclamation mark- !) It should work fine by editing that character out, but please do tell us if you're still experiencing issues with SteamVR. 

 We've received reports that the game won't boot up through SteamVR for some people, and we now know it's because the game's filename had a Japanese unicode character in it. (The exclamation mark- !) It should work fine by editing that character out, but please do tell us if you're still experiencing issues with SteamVR.