So even with multiple Explorer windows open already?
It's very strange, since all Opus will be doing is running that exact same command.
In a command prompt, what happens if you run it via the start command, and do that more than once without closing the windows that open:
start explorer.exe /e, C:\
Going back to what you asked earlier, to check the /windows alias in Opus, just type it into the location field and see where it takes you.
