Unable to connect on VPN

I have a iMac and a MacBook both running OS X 10.9.2. I am trying to use the Checkpoint VPN to connect to work. I am able to connect using my Macbook, but for some reason I just am not able to do it on my iMac. The Checkpoint folks haven't been helpful.

When I look at the logs I get stuff like

"The exclusion subnet is totaly strange to the main subnet.." and

"VNA_TunIF_Create: connect failed No buffer space available", "

VNA_TunIF_Create: Failed to allocate name of interface".

Not really sure what any of this means - I have plenty of memory. If anything the Macbook is ancient and has less memory. Any pointers would make my life infinitley better. Thanks