Thank you for your fast reply. I'm working with AD version 16.1.10 and both tried importing as a generic 3D model using the "File" option as well as "embedded" (Load from File...) and both give the message that the model cannot be opened. Also in step viewer and solid edge the model doesn't open. I tried to download and unzip on another computer but again same issue. Anyways, if you were able to use it, the step model should be OK.