Do you have/use BIDULE ??
Like I said, there were 3 pieces of software that have been changed/updated, so it adds to the troubleshooting task to figure out ... and NONE of this software is bug-free.
In particular ... the FIRST culprit I look at is ANY plugin I make with FS
Now that I'm registered at the Plogue forum, I'll post this particular issue there ... see what results from that.
Considering what BIDULE is, there are some extreme templates built that use multiple VST's that easily 'talk' on 16 INs and OUTs. One of the OUTPUT modules handles 64 outputs

As I read through the forum, I have yet to see anyone mention a similar issue that I have with a 2-in, 4-OUT circuit. That's not to say there is not a bug somewhere, but MY little 'simple' routing switch can take down REAPER
Anyway ... I was fortunate to get some BIDULE help, and have modified a piece that is native to BIDULE to handle the switching via [CC-30]. It works, and most importantly, does NOT crash.
Still, I'm a bit disappointed to not use my FS module to do this particular function. I kept the MIDI FILTER VST that is FS made [works].
These are mainly personal tools I use for my Mastering job. Maybe the BIDULE guys will find something ... but for now, I've a full working chain ... got to be happy about that
I'll post back any reply.
Thanks for helping Guys ! Additionally ... I did get to see/learn about a different routing technique [tester] ... so it is all good.
