P3D v4 provides a new way for add-on developers to install their products. The idea is to separate the installation path of the Add-on, from the original P3D Path. This should prevent add-ons from having to be reinstalled after P3D updates. On the other Hand, this makes it more difficult to read out all installed aircrafts, because the developers are free in defining their paths. In a soon update, RealTrim Professional will automatically recognize and configure these aircraft as well. Until then, these aircraft must be manually configured. The manual below shows an example how to do it.

Download_Manual_Configuration