Hi
New Sparkle user also have Beatstep pro and Keylab49.
I am using Studio One 3.2 Pro with a Mac OSX 10.8.6 16Gb Ram i5
Sparkle is a cool interface and has great sounds but there are some nasty bugs.
Cannot save a template containing Sparkle in Studio one the hardware device will not connect with the software Sparkle when you try to re load the project or template. The hardware device is totally unresponsive and unconnected with the loaded project or template.
To use Sparkle it has to be a new project every time with all the setting up of midi outs and channels which is really annoying.
I have issues with Beatstep pro which I will post separately and also with Keylab 49 both of which are similar to SparkLe.
That said I like Arturia products
Jon