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OpenStudio has caught a self-intersecting face (or polygon) here. Maybe post the whole error output, which I believe should list the problem face vertices in sequence (like this). Should be easy to diagnose.

OpenStudio has caught a self-intersecting face (or polygon) polygon here. (see line 950). Maybe post the whole error output, which output (which I believe should list the problem face culprit polygon vertices in sequence (like sequence ... like this). Should be easy Better yet, provide a link to diagnose.the generated .osm file. The issue is likely due to the sequence of vertices of some surfaces (e.g. "Face 245", "Surface 35"), or those of their adjacent surfaces.