The following bug has fallen on me.
If I play a pad / instrument at 9-16, sometimes the kick from pad 1 fall out!
Then I need to load the kick drum new into the pad/instrument 1.
I am not sure what's up then with the kick drum in Pad 1?!
This reminds me of the Jomox XBase 888 or 999, which had also such crazy bugs!
But those are analog! Please remove it!
That way you will get it, right?
Also Ableton Live Crashed sometimes while driving down after working with Spark.
The support from Ableton writes me that lies at the Spark!
I use a PC with WIN 7 (64Bit), Quad Core 4 x 2,8, 4 G Ram