Interestingly, if I look in the code for 2.0.7 there is no reference to ‘mvcp’.
And if I try and find the source for the build they used 2.0.7.34150ef, the git hash at the end of it does not appear to exist either.
Vizrt used to ship a version of casparcg with mosart (Controlling CasparCG from a Vizrt Mosart? - #3 by eskojua), perhaps that was a custom version with a custom implementation of mvcp that was never contributed back upstream?
Either way, they don’t do that anymore, and it doesn’t exist in any official builds anymore (if ever)