Dear Sir,
I am not sure if the customer fixed that or not. My questions about the serial number remained without answers. I assume the customer fixed it as he never asked for help anymore.
Normally the installer installs the driver and you have to press Ok just before it does so, can you confirm you are seeing that during the installation? Maybe you are on a domain and there are specific policy preventing the software to communicate with the device driver? If so you might want to try that on a machine not joined on your domain.
Windows 7 requirement, the installer does not block that yet but Windows XP is not supported anymore, can you confirm you are using Windows 7?
Can you open a command prompt with Administrator privileges, ie right click on "Command Prompt" and choose "Run as administrator". Then cd to the application folder and try to run it.
You can also try to manually start the ETHAPI driver service, in the same command prompt with admin privileges, enter: net start 4dspnet and let me know what happens.
Best Regards,
Arnaud