Nero burn processed failed

How annoying is this!!!

It allows me to put TV Episodes on to disc but when I try and do a movie I get the error message!!!

This has only recently started happenning can anyone advise please I have the error files but there massive!!!

My discs are Verbatin 16x certified, could this be the problem a before I was using Verbatin 4x vertified do i need to change a setting somewhere??