Great synth, Sean. I've kept it as one of the few free synths in my leaner, meaner system. There was a time several months back where I dove into it heavily, but it kinda got pushed aside when I got z3ta+.
There's quite a few structural similarities between the two synths, with z3ta+ being a little more refined, and the Rock providing a sharper-edged sound. Both have their unique places, but the price point of Concrete makes it amazing.
Here's a thread about it from last September that includes some comments from the developer. As for your problem, I've never had the Rock not play well with others. I just tried it alongside quite a number of other soft-synths, and both play in unison (if set to the same port/MIDI channel). The only thing that I can think of is that you may have gotten caught by the MIDI Override button, a misplaced port/channel setting, or a KB transmit channel miscue.
I don't mean to insult your intelligence, but I can think of no other situation/solution. Can you post what VSTi(s) caused the Rock to "drop out"?
< Message edited by b rock -- 1/29/2005 9:09:55 PM >