I have a report with a number of small bmps designed to print under certain circumstances. When I developed the report, they printed perfectly, but after a time (a few months in this case) they stopped printing, or at least began to print intermittently.

They were 12x12 2 color bitmaps, and changing them to 32x32 doesn't seem to change anything. They show up and some print in part, but others don't. I have checked all the different settings for images and they don't seem to make any difference.

Do I need to have 16 color or 256 color bitmaps even though I am only using b&w? Any suggestions would be appreciated?