Backup failed

Hi There,

MY regular backup is failing and here is the log I received. Can anyone please decipher as to what is going wrong here ?

  Information    31/01/2016 11:45:04 PM    Stage Description
2    Information    31/01/2016 11:45:04 PM    Operation MS_R_Backup started by schedule.
3    Information    31/01/2016 11:45:05 PM    Analyzing partition '0-0'...
4    Information    31/01/2016 11:45:05 PM    Analyzing partition '1-1'...
5    Information    31/01/2016 11:45:05 PM    Analyzing partition 'C:'...
6    Information    31/01/2016 11:45:05 PM    Analyzing partition '0-0'...
7    Information    31/01/2016 11:45:06 PM    Analyzing partition 'F:'...
8    Information    31/01/2016 11:45:06 PM    Stage Description
9    Information    31/01/2016 11:45:06 PM    Updating backup database:  Setting verification requirement for database access.
10    Information    31/01/2016 11:45:06 PM    Create Full Backup Archive From: Disk 1 To file: "F:\MS_R_Backups\MS_R_Backup.tib" Compression:  High Exclude:   Files matching mask Match criterion:    *.tib, *.tmp, *.~
11    Information    31/01/2016 11:45:06 PM    Pending operation 150 started: 'Creating partition image'.
12    Information    31/01/2016 11:45:06 PM    Locking partition 1-1...
13    Information    31/01/2016 11:45:08 PM    Pending operation 150 started: 'Creating partition image'.
14    Information    31/01/2016 11:45:08 PM    Locking partition C:...
15    Information    1/02/2016 2:21:17 AM    Pending operation 147 started: 'Saving partition structure'.
16    Information    1/02/2016 2:21:17 AM    The following backups have been successfully created: "F:\MS_R_Backups\MS_R_Backup3.tib"
17    Information    1/02/2016 2:21:17 AM    Updating backup database:  Inserting new backup version with record ID 0 into backup with ID 9822613512296438689 of backup group with ID 0.
18    Information    1/02/2016 2:21:18 AM    Updating backup database:  Inserting new volumes into backup version with record ID 0 of backup with ID 9822613512296438689 which is located in backup group with ID 0.
19    Information    1/02/2016 2:21:18 AM    Updating backup database:  Setting new backup options for backup group with ID 8402.
20    Information    1/02/2016 2:21:18 AM    Updating backup database:  Removing verification requirement for database access.
21    Information    1/02/2016 2:21:18 AM    Consolidate Backup Archive Location:       "F:\MS_R_Backups\MS_R_Backup3.tib" Destination: "F:\MS_R_Backups\MS_R_Backup3_C4D0485B-1E40-4A37-914C-603EA923BCD9.tib"
22    Information    1/02/2016 2:21:18 AM    Consolidate Backup Archive Location:       "F:\MS_R_Backups\MS_R_Backup3.tib" Destination: "F:\MS_R_Backups\MS_R_Backup3_C4D0485B-1E40-4A37-914C-603EA923BCD9.tib"
23    Acronis True Image Home    1/02/2016 2:21:18 AM    Failed to open data stream.
24    Acronis True Image Home    1/02/2016 2:21:18 AM    The specified file does not exist.
25    Acronis True Image Home    1/02/2016 2:21:18 AM    The specified file does not exist.
26    Acronis True Image Home    1/02/2016 2:21:18 AM    The system cannot find the file specified
27    Information    1/02/2016 2:21:18 AM    Updating backup database:  Inserting new backup version creation information into backup with ID 9822613512296438689.
28    Acronis True Image Home    1/02/2016 2:21:18 AM    Operation has completed with errors.

Thanks