Hi all I'm at my wits end today after receiving a HK T6A TX from Hobby king which is programed via a PC cable sold separately this I thought would be no problem as I have two flight sim cables that I think came with my stock Esky TX and they look exactly the same as the program cable on the HK website, problem is I cant get my new tx to work on my laptop it installs correctly(I think) but when I try to open up the programing software it says invalid port number?? I just really wanted to know if there is a difference between the sim cable and a program cable and if that could be the rout of the problem.