Tyring to open the PDF linked in the URL, poppler crashes with this error: Error (0): Call to Object where the object was type 2, not the expected type 1 This happens both with evince and with pdftoppm. Acrobat reader (9.0) opens this document without problem and without warning about any error. Note also that this document was created using the F/OSS reportlab package (via PDFMap http://www.librelogiciel.com/software/PDFMap/).
Just fixed on master branch, anyway the PDF is wrong, has /Mask entries with real values when they should be integer values (Color Key masking section of 4.8.5 Masked Images in the PDF spec), please open a bug against the PDFMap project.
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