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I have file with many symbols/ instances. They render fine in the original file. But I did a cut and paste from the entire original file into a new modeling window. When I send it to render, I get a bunch of error message like "unknown Mesh", "can not find object set base"...there are other messages as well. I am wondering if there is an issue with cutting and pasting symbols into a new modeling window.

Has anyone experienced this?

Aaron