Standard monitor file from Radiance website; how to use it?

radiance-general
1

Hello,

I want to create a simple basic office room with a table and a computer screen in the middle. I found a standard file of a flat screen monitor on the radiance website: http://www.radiance-online.org/pipermail/radiance-general/2007-March/004241.html
With the 6 files:
VDThead.rad

VDTon.rad

VDTscreen_on.rad

VDToff.rad

VDTscreen_off.rad

VDT.mat

(and also here: http://www.radiance-online.org/pipermail/radiance-general/2006-July/003845.html)

Unfortunately, it doesn't seem to work..
When I enter: " oconv VDToff.rad VDT.mat VDTscreen_off.rad > test.oct "

I get the following result:
" oconv: fatal - (!xform -rx -10 -t 0 0 12 VDThead.rad VDTscreen_off.rad): undefined modifier "VDT_plastic" "

Does anybody know what am I doing wrong here?

Thank you in advance!

Kind regards, Mirjam