i have the 1351 type plotter, and never got flexisign to run my plotter, only ONCE i did! Lucky i have borrowed this copy of FS off my neighbour as i prefer to trial it than pay for it and then find out last thing it cannot run it.
i have reasearched all over the forums until i found this place! and someone mentioned the hewlett packard absolute driver, it worked for one day! after i restarted my computer it gave me write port errors again when i tried using flexi sign!
If you cannot get it to work with the PNC-1000 driver then there is something else wrong. Is your flow control changed to hardware in the device manager of windows? You can check by going to the Ports (Com & LPT) section of Device Manager, double click your port, second tab, flow control = hardware. Once you change this you will need to unplug your usb and plug it back in to reinitialize the port. Once you have this changed you should be golden.
Sure it does, if it didn't then it's not a legit copy and the problem would probably lie in the crack. Since it has a dongle and is legit, I'd contact SA International who is the maker of the software and see if they have ever heard of the problem.