Hi,
Following are the steps to create netlist,
Tools--> Create netlist -->select PCB Editor tab-->For further steps find the attached document.
if it asks for over write the created netlist click on ok. If it creates netlist then no problem, if not,again go to create netlist and then pcb editor tab after that besides to create pcb editor netlist, setup option is there click on that button and then check for configuration file whether it is assigned or not, if not then navigate for the configuration file. After that it should work.
Regards,
Hanumagouda patil