Same configuration works fine in our test scenes. Probably something is wrong in your installation.
Please, try this:
- Be sure there are not ForestVRay???.dll files in your Max root folder. If any, delete them.
- Same for forestpackpro.dlo in the 'plugins' folder.
- Reinstall FP 7.4.2. With this version, all plugins files are installed at C:\ProgramData\Autodesk\ApplicationPlugins\ForestPackPro2022 (that changed from previous releases).
If it continues crashing, please send us the minidump to check it.