In the attachment you can find two anonymized screenshots of the PDF pages 218 and 219. I thought it might help you to see some screenshots. Those PDFs have been generated on two different computers (PC1 and PC2) who both have the blue image problem. As you can see the problem occurs in the PDF file...

I did some more testing during the last months. First I took two less secret TIF images and wrote in each image a number using imagemagick so that all images are unique. Afterwards I put all images in a word document und converted it into a PDF, but actually the bug with blue images didn't appear. I...

OK, perhaps I can build a showcase word-document which isn't working correctly.

If I convert the first 150 pages and afterwards pages 151 until end, every image is displayed correctly in the pdf-file. So this problem occurs only if I convert the word-file at once.

When I convert a large office document (more than 200 pages) where nearly every page has two images on it, the first 200 (+/- 10 pages) are converted correctly. But on the higher pages (page 200 upwards) the images are substituted by blue or transparent boxes. I updated the software to the newest ve...