AE 2015.2 v.184.108.40.206 (latest update) Doesnt show R3D as a supported file format anymore when importing files? Is this a bug or is there a reason for it?
This bug is fixed in the After Effects CC 2015 (13.7.2) update: http://adobe.ly/1WaV0pP
This bug-fix update fixes only one bug that occurred in After Effects CC 2015 (13.7.1) on Mac OS X: RED (.r3d) files can again be imported, and are not reported as missing in existing projects.
This update is for Mac OS X only and is not available for Windows, because the bug with RED files did not occur on Windows. The most recent update for After Effects on Windows is After Effects CC 2015 (13.7.1).