Just want to add, that I get the same issue
538812 TransmitClientEvent failed! (Event=65763, Param=-256, nGroup=0, fSame=0
538812 TransmitClientEvent failed! (Event=65762, Param=-674, nGroup=0, fSame=0
538828 TransmitClientEvent failed! (Event=65763, Param=-511, nGroup=0, fSame=0
538828 TransmitClientEvent failed! (Event=65762, Param=-512, nGroup=0, fSame=0
538843 TransmitClientEvent failed! (Event=65762, Param=-256, nGroup=0, fSame=0
538859 TransmitClientEvent failed! (Event=65762, Param=-63, nGroup=0, fSame=0
538875 TransmitClientEvent failed! (Event=65763, Param=-256, nGroup=0, fSame=0
538875 TransmitClientEvent failed! (Event=65762, Param=0, nGroup=0, fSame=0
538890 TransmitClientEvent failed! (Event=65763, Param=0, nGroup=0, fSame=0
538953 TransmitClientEvent failed! (Event=65763, Param=115, nGroup=0, fSame=0
539000 TransmitClientEvent failed! (Event=65763, Param=0, nGroup=0, fSame=0
539578 TransmitClientEvent failed! (Event=66387, Param=-14581, nGroup=0, fSame=0
539703 TransmitClientEvent failed! (Event=66387, Param=-16384, nGroup=0, fSame=0
These are just some of hundreds as I was moving my axes a while, what is shown here as parameters, but no movement in the VC.
I had this twice relative shortly and in both cases I made a steep turn (with my saitek pedals) while rolling on ground. Coincidence or not.
Note: I haven't installed the provided exe from above. Just the original current FSUIPC
thx for having a look into it!