Ian,
Hi, we are also UK Architects and use Macplot and Raster 5.1.2 on VW 10.1, MacOS 9.2.2.
Apologies for diving into your thread but we have just upgraded to VW10.1 from 8.5.2, and had to updrade Macplot from 4.7.
We use an HP 1050C plotter [no PS].
We are experiencing severe problems on Macplot providing only monochrome [not even greyscale] and are having difficulty fathoming this out.
You appear to get colour via Macplot albeit your want patterns to behave differently. We find Raster is fine for full colour but painfully slow for general working darwing production, when plot runs are big.
can you confirm that you get the full [8] colours from HPGL/2?
skip belton