Cannot see plugins in 3ds Max 9 after installed (RPC, ForestPro)

Reason:

The plugin.ini file in [path]\3dsMax9 needs additional information to activate the 3rd party plugin.

Solution:

1. Make sure 3ds Max 9 is not running.
2. Open [path]\3dsmax9\plugin.ini
3. Add "Additional MAX plug-ins=[path]\3dsmax9\PlugIns\" under [Directories].
4. Save the change.