Unity 3 can't import 3ds max 2010 file

I'm trying to convert my project file from Unity 2.6 to Unity 3 but Unity 3 is always crashed when it imports max file. When I remove max file from the project, Unity 3 can finally open my scene. But when I try to import max file, Unity is crashed again. I have to manually close the 3dsmax process under Unity process in the process explorer to make Unity becomes responsive again. The log said that "3ds max couldn't convert the max file to an fbx file"

Unity 2.6 can normally import them. So, what's the problem here?

OK. I'm not quite sure what's the cause but after update and reinstall FBX plug-in for 3DS Max 2010. Unity can normally import them again. This question can be closed.

Unity3 Can import max files..i have done it with no problem.