AutoVue Displays in Grey for Hybrid Microstation/Raster files.

 Hi  We have recently upgraded from Version 19.2 to 20 and since this all seems to be OK apart from the fact that our Hybrid Microstation/Raster drawings are now displaying in grey rather than Black - even though we have the forcetoblack switch in the .ini but still only shows Grew for hybrid drawings. Was fine before upgrade. Ini file looks like this:
# This file contains settings applied to all users.
 These settings are not meant to be changed on a
 per-user basis.


[Options]
DGNIRASB=1
LOADFACETEDDATA=0
NOACCELERATION=1
JPGQUANTIZE=0
XFONTPATHS=C:\Program Files\jVue\bin\fonts;C:\Program Files\jVue\bin\fonts\generationfonts;