I'm running AFPD with patch 1.8.0.21. It runs fine when using a 4 channel Graupner transmitter. However when I plug in the Futaba FX18 transmitter and start AFPD , it gives a warning that it cannot find the USB interface!
When I start AFPD without the FX18 connected and then connect the FX18, AFPD gives the same error after a little while. Hence I cannot use the FX18.
Note that it is not simply the tx that does not work, AFPD says that it cannot find the USB cable with the FX18 connected.
How can I solve this problem?

thanx. MadHeli