The most probably you are using a wrog Windows version of USB for Remote Desktop. Please make sure you are using an Igel edition version.Here you can download it:
Please send us the following information so we can investigate the issue: - The system information of both PC's where USB for Remote Desktop Server is installed. To get system information file you need to do the following: Start -> Programs -> Accessories -> System Tools -> System Information File -> Save. - The USB for Remote Desktop log file. Please look for the logs in %systemroot%\system32 folder (or if your PC is x64 then in %systemroot%\syswow64). The log file name should be "ftusbrdpsrv.log"