What are the basic things to check for when troubleshooting WebHMI?
Make sure that the paths are all correct. You should have a path to a GenBroker configuration file, a path to the WebHMI cab files and finally a path to the start GWX file. Also, make sure that GenBroker is running and that it is using the file you specifed in the .htm file. Make sure that the IP addresses are all the same and typed in correctly and you should check the settings of your Web Server.