FP-2000 Error: Serial port receive buffer overflow

Hello

I am trying to get an old system working, that was set up by someone else, and upon running our program we get the following error:

Error 63 occured at TCP Open Connection in Host Comm.vi->Host Main.vi

Possible Reason(s):

LabVIEW: Serial port receive buffer overflow

-----

LabVIEW: The network connection was refused by the server

We are running an FP-2000 directly hooked up to the computer by ethernet, can anyone help us?

Thanks in advance!