Ok, then there must be something more which is trigering the problem, because Forest doesn't save the scene in any way.
Please, send us the following information:
- Max version, including service pack.
- A list of all plugins and scripts you have installed.
- A screenshot of the <maxdir>\plugins folder.
- Other screenshot with the content of <maxdir>\scripts\Startup.
If you don't want to post that info here, please send me a private message.