I just downloaded the V Collection 4 today, and had no trouble with installation. When I opened up a new project in Studio One 2, Spark does not show in my instruments list, although everything else does and updated correctly. I've tried reinstalling Spark, removing Spark Vintage, and the problem still exists. I have no problem running Spark as a stand alone. For some reason I can't find - or think of - S1-2 won't recognize the Spark VST.
Any help or ideas would be appreciated.
Jeff