What is this error?

02	06/12/12 21:41:01.102	ZW_Send_Data node 9 USING ROUTE 3.0.0.0 <0x2c493680>
01	06/12/12 21:41:01.388	got CAN <0x2c893680>
01	06/12/12 21:41:01.389	ZWaveSerial::Send m_iFrameID 827 type 0x0 command 0x16 got repeat failure 24 iNumFailedResponse 1 time 4280388 start time 4280347 wait 2000 m_iSendsWithoutReceive 0 <0x2c493680>
01	06/12/12 21:41:01.389	ZWaveJobHandler::SendDataAbort failed <0x2c493680>
01	06/12/12 21:41:01.390	ZWJob_PollNode::Run job job#102 :pollnode #9 (0x129ebe8) N:9 P:100 S:1 ZW_Send_Data to node 9 failed 1 req 0x129ed68/1 abort m_iFrameID 0 <0x2c493680>
02	06/12/12 21:41:01.390	ZWJob_PollNode::PollFailed job job#102 :pollnode #9 (0x129ebe8) N:9 P:100 S:1 node 9 battery 0 <0x2c493680>
06	06/12/12 21:41:01.390	Device_Variable::m_szValue_set device: 1 service: urn:micasaverde-com:serviceId:ZWaveNetwork1 variable: LastError was: Poll failed now: Poll failed #hooks: 0 upnp: 0 v:0xe38fe0/NONE duplicate:1 <0x2c493680>

since a new sensor OREGON on my RFXcom, I have “ERROR : Erreur dans le lua pour les scènes et les évènements”

Could you help me?

Unfortunately, that error just means you have an error in your LUUP code somewhere. It doesn’t tell you what scene/event has the error, etc.

Did you recently modify LUUP code in some scenes or events? You can test the LUUP code for each scene/event in:
Apps → Develop Apps → Test Luup code (Lua)