Hello,
You have to first update ASD. Open ASD go in file menu/Steel/Project Preferences/Profiles/click inverted T shape for adding AISC shape/OK.
Now you can import your file & there will be no error.
Thanks,
Suresh
www.bim-3d-4d-5d.blogspot.com
www.bim-navisworks.blogspot.com
Twitter @SureshChotrani
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