had to replace my pc due hardware problems and couldn't deactivate railmaster myself. emailed support 11th December to deactivate it so i could reinstall it on the new PC but still haven't received any response. sent a 2nd email to support@rail-master.com 17th Dec and no response to this either. was hopeing they had deactivated it and just not told me but if i try and activate it get error "unable to open resource" Looked at the trouble shooting and have 1/ reinstalled it as " run as administrator" 2/ allowed RM access thru win 10 firewall 3/turned off firewall 4/ have no other third party security installed. is RM support usually so slow to respond. very frustrating that i can't use it because they not responding. Am also trying to get some help from customer service appreciate any advice rgds, Geoff