I have been scanning old negatives with VueScan 9.5.XX, with simultaneous output of DNG and JPG formats . In BreezeBrowser Pro 1.9.2 thumbnail view these show as DNG/JPG at the top left corner of each thumbnail. Whilst in the main view the DNG file is always rendered colour positive, in the thumbnail view it is rendered positive for some scans and negative for others. Why might this be so? What can I do to get a consistent (preferably colour positive) rendering?