Hi Panos, I don't know of any demo mode, but I'm not too worried for the moment. I'm just working on the choral music without words for the moment and I'll put them in later when it's all sorted out. Deadline for this music is 30 Oct so hopefully it'll be sorted by then
I'll keep you posted.
Update: I got an answer from EW support. They say "WordBuilder doesn't require a serial number" (So why did I keep getting a pop-up box saying "Please enter your WordBuilder Serial Number"??) and that it looked like I was using an old version. "Trash it and install the latest from the website" which I duly did. Now I'm back to WB not appearing in Cubase at all. Still won't work as a stand alone either. I've told them this and now waiting for the next step.