Error opening Usb com port (ftdi chip)

I upgraded that

http://www.youtube.com/watch?v=QSElXKtEZRM

form serial to usb connection

but my problem is that

when i am tring to send data to the controller then the profiller says

Error on opening comport #

when the comport is a serial hardware comport there is no problem
but on usb i have that problem

and from 2.0 and 2.1 version

i have test it from 3pc's Xp vista and 7

i dont think that is a hardware error

because on my previous cluster

http://www.youtube.com/watch?v=Q2Ym7Q0MooM

there where no problem and everything was ok

thanks a lot

It's likely that your virtual serial port driver did not install correctly.

-Can you show a screenshot of your Device Manager with Ports expanded?
-Do you see your virtual com port under ports, or is it elsewhere in the device manager?

If it is elsewhere, right-click on it and delete it (with permant removal checkbox if shown). Then unplug it and plug it back in ensuring that you are connected to the internet so the drivers can be automatically downloaded.

the serial port is OK because i cansend data from a hypper terminal and the cluster responds

my friend that i gave him the cluster yesterday told me at 3 o'clock in the morning tha he changed the port from 21 to 2 and it worked

i will check it later

thanks a lot

Hi Herc,

Try to change he comport settings to Serial Printer... ;-)
Works for me!

edit: Here is a link that might help post13868.html#p13868

Thanos