Connecting MT4 EA it states "Controlled by Zorro EA 2.09"
Connecting Zorro to MT4 it states "!ZorroMT4.dll V4.25"
After connection, MT4 Terminal returns "Zorro Connected / Dll V4.24"

Besides it is a slight diff in the version stated, maybe it is also a reason for some issues I experience with History Download not working properly?

At least it is a bit confusing and leaves the user in doubt.