[SteveC116]

I've had some bad experiences getting Max and Inventor working together. The easiest way to get an Inventor file into Max is to export it as an IGES file. The only problem with that, is the geometry gets messed up if it's too complicated.

The problem with Max behaving really slowly is most likely because you just ran Inventor. Running Max and Inventor at the same time can cause major speed problems in Max. Sometimes, when you close Inventor, it doens't actually close. Check your processes in the task manager to make sure that inventor.exe actually shut down.

Finally, there is an easy way to merge a normal Inventor part or assembely into Max without importing or exporting to different file formats. In your BIN directory for Invetor there is a file called LoadInventorImporter.ms. Copy that file into your scripts\startup directory for either Max or Viz and restart the program. You will now be able to use "Merge" from the file menu to import Inventor files.