Burning DVD+R, simulation


i have Nero SDK 1.05 installed.

It is not possible to perform a DVD burning simulation with DVD+R(W) DVD.

I am using a Plextor 712A (Firmware 1.05) DVD deviceand i have Nero installed.

It is also not possible to a simulation either with the neroapi.exe apllication or with Nero Burning Rom itself.

Can anybody help me ?