Hi,
Looks like, Forest Pack can´t allocate the Distribution map needed to recreate the preset. By default all built-in distribution maps are located at C:\Program Files (x86)\Itoo Software\Forest Pack Pro\distmaps\images.
Adding the ...\distmaps\images folder to your External Files path list under Customize - Configure User Paths should fix the issue. For that purpose, there is a pop-up window when Forest Pack starts which can perform it automatically for you.
Kind regards,