Hi Pesco

I also purchased my Silhouette through QVC when it was under the Quickutz umbrella and it was a 2.6 version, then later on there was a 5.10 version that was still under the Quickutz umbrella.

I'm pretty certain that Sillhouette America produced a 5.3 version for some kind of update but I can't remember what it was, but I do remember not downloading it because 5.1 was ok.

When I first downloaded the Studio software I didn't have any of the GIF problems at all, so you will have to draw your own conclusions.