This is not a chat room and sometimes it is weeks before you get a response. Please do not start topics in hopes to generate new responses to old questions. That said, I'm going to merge these topics. Hang on!
Now, you should know that any model you edit in Blender and try to export is almost guarenteed to not work. And I'm sorry, but this IS very complicated stuff and not easy to understand by nature. If it WAS easy, BF and other gaming companies would be out of a job.
Also, apparently you are trying to now install max plug ins, but earlier you were asking for help for Blender? Are you sure you are installing BLENDER plug ins for BLENDER?