Urbackup Client indexing

Hello,
i have set up a urbackup server on unix.
All clients are working but only 1 client can not index.
Please can you helpt me.

2017-02-27 10:01:52: WARNING: Last record not readable at ‘c:’ - reindexing. Last record USN is 349638620024 FirstUsn is 350259773440 NextUsn is 350295237912
2017-02-27 10:01:52: WARNING: There are 656617888 new USN entries at ‘c:’ - reindexing
2017-02-27 10:02:51: WARNING: Parent of file with FRN 185492009653555436 (Name “Monitor0000.mdnd”) with FRN 27866022695085338 not found. Searching via MFT as fallback.
2017-02-27 10:02:51: WARNING: Parent directory not found in MFT. Was probably deleted.
2017-02-27 10:02:51: WARNING: Parent of file with FRN 47006321111912667 (Name “Trace0000.tdnd”) with FRN 27866022695085338 not found. Searching via MFT as fallback.
2017-02-27 10:02:51: WARNING: Parent directory not found in MFT. Was probably deleted.
2017-02-27 10:02:51: WARNING: File entry with FRN 27866022695085338 (Name “2017_02_03__07_38_48”) is a directory not being created, but not in database. Added it to database
2017-02-27 10:02:51: WARNING: File entry with FRN 1972576636789040688 (Name “wnst”) is a directory not being created, but not in database. Added it to database
2017-02-27 10:04:41: ERROR: Recvfrom error in CUDPThread::UdpStep
2017-02-27 10:04:41: ERROR: Last error: 10058
2017-02-27 10:08:31: ERROR: Fatal exception code 3221225725 at address 0x0000000077CEDD43
2017-02-27 11:58:42: WARNING: There are 15878496 new USN entries at ‘c:’ - reindexing
2017-02-27 12:37:59: ERROR: Recvfrom error in CUDPThread::UdpStep
2017-02-27 12:37:59: ERROR: Last error: 10058
2017-02-27 12:40:38: ERROR: Fatal exception code 3221225725 at address 0x0000000077CEDD43