It is impossible to install this Grabber. I first tried it on Windows 8 - worked the installation itself, but then there was no driver to be found. After hours of searching on the Internet (the Mumbi website offers no help, but is merely a Webeseite for mobile films - great service when something is sold, and not even one Download the driver to or find info to may), although I have a driver found, but still a little lacking. Well, in the description of Windows 8 is not mentioned, so my mistake.
I then tried the whole thing on a Windows Vista PC - the same problem, not a driver. On the Internet you can find lots of people who have the same problem, so it is surely obvious to the product. Some PC connoisseurs like "tinkering" by around have found any solutions, but for the average user, this product is absolute crap, because you can not even install it properly.