When I try to use the Composite Beam design extension for Revit Structure 2012 I get the following error: "1 of the selected members were not recognized types and will not be designed". I have tried this with all of my members and I get the same error. I am using a simple W shape beam and can't seem to get past this error.
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The withepaper and the movie below should help you, if not please send us you rvt file for deep analysis
Thanks. I actually realized that there was an update to the Revit Extensions and once I downloaded the new update it seems to have taken care of the issue.
Thanks for your feed-back