SQLITE_ERROR: unsupported file format

Database Error

unsupported file format
SELECT blob.uuid  FROM tag, tagxref, event, blob WHERE tag.tagname='sym-'||'tip'    AND tagxref.tagid=tag.tagid AND tagxref.tagtype>0    AND event.objid=tagxref.rid    AND blob.rid=event.objid  ORDER BY event.mtime DESC 

If you have recently updated your fossil executable, you might need to run "fossil all rebuild" to bring the repository schemas up to date.