Hi, what Forest version do you use ? Does it happen with the default libraries, or using your own libraries ?
By default, Forest 6 and above, adds all the texture paths to "Configure->Configure User Paths->External Files", so maps should be located automatically. It works in this way:
* First time Forest is used, it collects all folders with name "maps" in the Library paths (defined at Library Browser->Options).
* These paths are added to the registry at HKEY_CURRENT_USER\Software\Itoo Software\Forest Pack Pro\TexturePaths.
* In a second phase, all paths defined in "TexturePaths" are added to External Files.
* These processes can be disabled setting "collectTexturePaths = 0" and "checkTexturePaths = 0" in forestpack.ini.
If you are using your own libraries, and they are not configured in this way, it's necessary to add the texture path manually to "External Files".
You can find forestpack.ini at "C:\Users\<username>\AppData\Local\Autodesk\3dsmax\<max version>\ENU\en-US\plugcfg".
The default libraries are stored at "C:\Users\<username>\AppData\Local\Itoo Software\Forest Pack Pro\lib".