App chrashes | can't open /data/data/hotplug/cmd | no such file or directory

Hello,

i Installed an Unity 3D App for testing VR with google Cardboard, but the App won't show up.

Logcat says:

Quote:

08-10 22:21:10.399 670-680/? E/﹕ Could not open '/data/data/hotplug/cmd' 08-10 22:21:10.399 670-680/? E/﹕ error : 2, No such file or directory

so my Question is:

Is there a way to fix this?
Or does someone know what this file is for?

Thanks,
Greetings,
Fotetaja