"4090 ppi is quite sufficient even for billboards! ;)"
Sorry that was my mistake!
I didn't mean to type "ppi" but "pixels"...Poser 4/Artist/ProPack has a limitation of 4090x4090 for the
maximum pixel dimensions (but can be circumvented by rendering a single frame animation).
Trying to set a dimension size larger than 4090 pixels in any version of Poser before Poser5 will result in this Poser error message.
SWAMP