Nul port issues

Hi

we are facing issues with the latest GPD drivers

drivers tested : - 5.469.9.0 and  -  5.469.10.5 SPAR

when we point the driver to a local nul port instead of a tcp ip port

(we need nul port for creating virtual queues)

bidirectional OFF, point manually for example to a xerox workcentre 7855 , disable/enable advanced printing features doesnt give anny effect

problem: printing from office applcations , excel also crashes the application itself , no page sizes possible

when change the driver port to a LPT port or tcp ip port, problem is gone

see screens, notice the "custom size"

this only happens with a local nul port : 

older gpd/specific drivers didnt face the issue

see picture/screenshot here : 

https://www.dropbox.com/s/gdykxx9tl0e6odk/Capture.PNG?dl=0