NetWorker Management Console version 3.5.1.Build.269 based on NetWorker version 7.5.1.Build.269
The pickle we are in right now is that this software is Java based, and stops working at a very specific release of JRE (1.6.26 or something like that). We still have some machines around with that release and it looks like we need to keep at least 1 of them, but this is clearly not a long term viable solution.
I'm pretty sure I saw a note on the networker list that 7.6 SP3 works with update 27, update 29, and java 7.