georeferenced sid image won't display

[cadtag]

I've got a couple of sheets out of a rather large run that will not display the SID aerials. The same four aerials are in all the other sheets in this set, and I cannot spot any differences in their properties, or the drawing settings. IMAGEFRAME toggles the frame on, but content within the frame is blank. AUDIT and RECOVER both show no problems.

Any ideas?

Let me add some more weirdities to these sheets,,,,, plotting seems to be ok, that is the SID back ground shows up in preview and on the PDF. Linework in model space looks weird, as though the SID is only being seen directly on top of model space lines. so far it's two sheets out of 18, all using the same SID files, all build the same way from an overall layout sheet

[BlackBox]

I've been having similar issues with aerials but mine are .PNG

Seems to happen when system memory is lacking; I've only been able to overcome it by toggling Graphics Performance off or simply restarting.

No idea what is causing it.

[brian.strandberg]

Try adjusting the visual style for the viewport. It could be they will only appear during certain visual styles. I havn't worked with .sid files much so this is only speculation.

Thanks.