I'm trying to run the demo on a windows server 2008 machine. I can't launch due to this error. This machine can't and won't be connected to internet.

I changed the IE settings but the program still will not run. Does it have to be connected to the internet?

See the latest DataEase Blog article (About discontinuing LegEasy4DOS Personal), especially the last sentence.

PB Associates

LegEasy4DOS Professional is cloud based so the admin interface don't work without internet access.

We are currently working on the Server Version of L4D Professional which is in beta as we speak. As it happens this version does not need to be installed on the server at all. You run it from any Administrator Workstation in the network and simply store the session configurations on the server.

The workstation will need Internet access when it configures the sessions, but the sessions can then be run from shortcuts on each workstation in the network without any internet access.

You will need to install a client pack on each workstation but after that you run the application as a "normal" DFD session.

We hope to release this update shortly.