Hi! Please have a look at the enclosed example.
I suspect there is something wrong with the graphic file although no tool reports any problem. The file was exported from Gimp, the source was a TIFF file created by little known and little used ddjvu program (I used it for the first time just now). I will appreciate your help. Best regards Janusz
<<attachment: bugJSB.zip>>
-- , Janusz S. Bien emeryt (emeritus) https://sites.google.com/view/jsbien