This has been my error for the last week:
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I get this error as soon as I open one of my files. I am wondering if anyone has seen this before, and how to reliably fix it. I have activated the problem file, and dropped the civil elements in effort to fix it, with mixed results. I fixed it once by deleting the apparent violating geometry and was able to work for a few hours, only to have the error reappear later that day. I have since dropped civil elements via activation several times, only to fix it once, but not the fix was not reproducible with other copies of the file. Thanks!