1. are the ones showing as 'modified' and 'ok' from the same archiCAD file as the 'error' ones?
2. if the answer to (1) above is "no", have you moved and/or deleted the archiCAD file from which they come?
3. if the answer to (2) is "yes", try selecting the three errors and choosing 'link to'. find the views they're linked to again.
4. if none of the above helps, delete the views from your layout and re-import them. sorry.
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