http://amabilis.com/ This site?
It is the developer, TGC is just a reseller...
If you got it from anywhere else I would be cautious...
It may be possible that the Demo version on TGCs site may be outdated for the SP1 release...
I would be sure that it works even if you buy it from TGC to add to that the Amabilis purchase portal feels a little dodgy...
Alternatively do you have another system nearby to test it on?
Quote: "On the other hand, I now have a x64 OS and the demo version says I have to try other version. Is there any 64 bits version?"
If it is not on the developers site, I doubt there is...
Quote: "I have tryed to install several times, even in my laptop, as admin, but the same thing happens. A smal black install window appears for half a second and dissapears. That's all. No install error or other message."
I am still new to using it, so unfortunately I cannot make a video to help showcase its usage... yet...
Quote: " Edit: any good videos showing how it works? I've seen one, making an object, but I'd also like to see the avi recording part.
"
Have you tried
YouTube?
EDIT
Just checked and confirmed that there is some very in depth documentation in the help section of the application...