Getting Open VPN and tunnelblick working with Mac OS Mavericks

I have a slight problem. I have a Mac laptop running OS 10.9.5 and uses Tunnelblick v3.7.8 to connect to our Open VPN work server (running v2.4.3) for access on our work network.

It is one of 4 Mac laptops used at work, and the only one running Mavericks.

All but the laptop I’m using is connecting without issue. While I can technically connect to OpenVPN, I can’t contact any other device or service on the remote network. Now, while I am considering upgrading to a later OS, right now, its currently not an option.

So, I was wondering if anyone here had a workaround to get all of the above happily working together. Any ideas?