When you launch After Effects, you could receive the following error:
"After Effects warning: The following plugins failed to load. Please reinstall these plugins:
When you launch After Effects 15.1, the Mettle VR plug-in is unable to load. The Adobe Immersive Environment head-mount display preview has replaced the Mettle VR plug-in in After Effects. The plug-in resides in a common plug-ins location, After Effects still tries to load it, thus causing conflict.
To resolve the issue, use any of the following workarounds:
Adobe After Effects CC 2017\Support Files\Plug-ins\Effects\Mettle
MAC HD/Library/Application Support/Adobe/Common/Plugins/7.0/MediaCore