I’ve also this trouble but it was solved by using first the netstat tool so in a command line with Administrator right write:
netstat -a -b
look what process is listeting on the port 5000, in my case was a National Instruments process, so go into the process manager windows (services.msc into the command window) and the stop all the National Instruments process.
After that switch your local IP address to 192.168.11.1, subnet mask to 255.255.255.0 and launch the tool (of course before did this be sure to have connected the LAN module port to the LAN port of your PC with a LAN patch cable ;-)).
Now you should be able to reach the module with the tool.
Hope it help.