08/12/15 17:45:13,451 com.apple.usbmuxd[78]: _SendAttachNotification Device 68:96:7b:23:8c:19@fe80::6a96:7bff:fe23:8c19._apple-mobdev2._tcp.local. has already appeared on interface 4. Suppressing duplicate attach notification.
08/12/15 17:45:13,451 com.apple.usbmuxd[78]: _SendAttachNotification Device 68:96:7b:23:8c:19@fe80::6a96:7bff:fe23:8c19._apple-mobdev2._tcp.local. has already appeared on interface 4. Suppressing duplicate attach notification.
08/12/15 17:45:15,807 iTunes[1004]: _connect_to_port (thread 0x700000ad0000): USBMuxConnectByPort failed to connect to the device f3d3a4ca35de8968c19622c5653c86ac0fecc2e5 on port 32498: RPC version wrong
08/12/15 17:45:15,816 iTunes[1004]: AMDeviceConnect (thread 0x700000ad0000): Could not connect to lockdown port (62078) on device 608 - f3d3a4ca35de8968c19622c5653c86ac0fecc2e5: 0xe8000065.
08/12/15 17:45:34,647 iTunes[1004]: Entered:_AMMuxedDeviceDisconnected, mux-device:608
08/12/15 17:45:34,647 iTunes[1004]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:608
08/12/15 17:45:34,647 iTunes[1004]: tid:20e6b - Mux ID not found in mapping dictionary
08/12/15 17:45:34,647 iTunes[1004]: tid:20e6b - Can't handle disconnect with invalid ecid
08/12/15 17:45:56,374 imagent[317]: [Warning] XMPPConnection: Error: Error Domain=LibXML2ErrorDomain Code=5 "(null)"
08/12/15 17:45:56,374 imagent[317]: [Warning] XMPPConnection: Error: Error Domain=LibXML2ErrorDomain Code=5 "(null)"
I have been having the same problems, I haven't changed anything or made any downloads.
These messages have been coming frequently in my Console over and over again...