First let me acknowledge that this is not a clear/precise question, rather I'm fishing for ideas.
Here's what I have ... I developed a composition originally on a MacBook Pro. Then did some work on it on a Mac Mini. Probably went back and forward a bit, projects shared on the two machines via Dropbox (I always make sure it is up-to-date).
Now, it works on the MacMini but on the MacBook Pro it "runs" (no errors) but the results are clearly different, and unexpected.
Always running from directories shaded with Dropbox so identical versions, but tried separate copies also.
OS's are identical, 10.13.2. Versions of Vuo identical, 1.2.6.
Stumped. Suggestion as to what to try? Avenues for investigation?