RFXcom 2.0 UNKNOWN command


i Have installed a RFXcom433E on my Pi,
I am running OH2

when a try to connect a motionsensor type PT2262 it pops up in inbox and i can link it to a Item.

but when i see the log it cant find the command UNKNOWN

The log shows:

[ERROR] [binding.rfxcom.handler.RFXCOMhandler] - Error Occurred during message receiving: can´t convert UNKNOWN to COMMAND SwitchItem

i also tryed with a remote control, but with the same result.

Can someone help ??