Log4OM

Hello
I have a Yaesu FT-857D and a Kenwood TS-480HX. The Kenwood CAT-Connection is working without any problems with Log4OM2. But the connection to the Yaesu FT-857D is not working with Log4OM2 2.4.0.0. With Hamradio Deluxe for example the transceiver CAT-control of the Yaesu FT-857D is working fine.
I use Omnirig 1.19 and I already installed the newest ini-File for Omnirig but Log4OM2 can't connect to the Yaesu FT-857D. What can I do?

Did you run Omnirig and Log4OM as administrator. This is needed to use the multithreading
function in Omnirig .....

Are all settings o.k. like COM, Baudrate ?

Hello,
Yes, all settings are correct. I also started Omnirig and Log4OM2 2.4.0.0 as administrator. The only thing that happens when I start Log4OM2 is that the Yaesu FT-857D is switching from VFO A to VFO B and back again from time to time.
I am not sure if the reason is that I am using a Yaesu FT-857D and with Omnirig there is only the FT-857 available.