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?