Time Machine backups fail with no error message

Question

My Time Machine hasn't successfully completed a backup since 3/19. It starts the backup on schedule, indexes over 2 million objects, goes through the phase of preparing objects, and then just stops. I know that there have been many changes since that time, but it isn't backing them up. Please tell me how to fix this.

Answer 1

I have the same problem - Time Machine fails to backup with no error message - after a brief foray into Mavericks. Each time it tries to backup, TM creates a new folder in the "in progress" directory but fails to complete.  Otherwise TM looks normal with no obvious errors. I have several HDDs.  I installed Mavericks on an external drive, migrated my data over to it. Booted from it and after a day or two decided I just didn’t' like it and booted from my Snow Leopard partition.  All was fine but apparently, I had forgotten to turn OFF Time Machine while booted into Mavericks.  Thereafter, Time Machine failed to backup.  Here's what I've done and the error logs:
Deleted the NEW directory that Mavericks created on TM
Done a full reset of TM (deleted: /Library/Preferences/com.apple.TimeMachine.plist
Re-entered the exclusions
Rebuilt the directory structure on the boot disc using DiskWarrior
Repaired the TM disc using Disc Utility
Resynced the Spotlight cache on the boot disk
TM also seems not to do a deep traversal since it just stops after checking files to backup.
Here are the error logs from the TM Buddy widget:
Starting standard backup
Error loading /Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle/Contents/MacOS/Vir tualPCDiskImagePlugin:  dlopen(/Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle/Contents/Ma cOS/VirtualPCDiskImagePlugin, 262): no suitable image found.  Did find:\n /Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle/Contents/MacOS/Vir tualPCDiskImagePlugin: mach-o, but wrong architecture
Cannot find function pointer MacDiskImagePluginFactory for factory 7F1FD83E-6684-11D8-968F-000A957703C0 in CFBundle/CFPlugIn 0x102f00930 </Library/Plug-ins/DiskImages/VirtualPCDiskImagePlugin.bundle> (bundle, not loaded)
Backing up to: /Volumes/Time Machine/Backups.backupdb
Event store UUIDs don't match for volume: Mac Pro Data
Forcing deep traversal on source: "Mac Pro Data" (mount: '/Volumes/Mac Pro Data' fsUUID: B4BEA50F-15B1-34BB-92F1-B7605139B852 eventDBUUID: BA019CB5-8123-4C99-9806-C9593D4EFA34), {1, 1, 1, 0}
Event store UUIDs don't match for volume: Music HDD
Forcing deep traversal on source: "Music HDD" (mount: '/Volumes/Music HDD' fsUUID: FF1EF8F5-30D0-34C0-BC02-ACDB5AD18B3A eventDBUUID: 92A95F63-5F4A-4987-90DB-5444ADF33D40), {1, 1, 1, 0}
Node requires deep traversal:/ reason:must scan subdirs|
Error: Flushing index to disk returned an error: 0
Backup canceled.
I don't know what to do next.  Any ideas?
Thanks,
John