Testing my MacBook Pro on Catalina, and noticed that after updating to ASC 2.0 I get this error (see Attachment) when launching Logic Pro (10.4.7). A restart makes everything work, but this is a problem that needs to be fixed.
Am currently updating a Mojave system, so will see if this issue is there as well - will update as I know more.
-UPDATE- The same issue does not happen on my Mojave (10.14.6) system, so it's (yet another) Catalina problem...
-UPDATE 2- Even after the restart, I have seen the Core MIDI error pop up after launching Logic again. Quitting and relaunching Logic seems to solve this. Might be another Catalina issue, but I did not see this when testing 10.15 before installing ASC and my V Collection plugins...