Seems to be unsolved.
I got a folder in which I put a bat file. It should open vvvv with a certain patch to start from. Looks like this:
@echo off START vvvv_45beta34.2_x64\vvvv.exe /o "../Sketchbook/Start.v4p"
From that my folderstructure is clear: The bat is in the same folder as my vvvv folder and my Sketchbook folder.
Now there is also a file that is /Sketchbook/sub.v4p
This subpatch is used in Start.v4p, and if I open Start while vvvv is running, it is found as usual. If I start the bat file, it is not, gives me a red node.
Put vvvv in this example to reproduce:
openBug.zip (2.2 KB)