With "LogViewer for Time Machine" you can view the logs of previous and current Time Machine backups. Simply start it up and it will display the most recent backup log. Any error will be displayed in red.
There's an active Time Machine backup? Just press the refresh button to refresh the log details to keep track of what's going on behind the scenes.
You can browse through the different backup logs by using the left and right more...
- Fixed an issue where manual backups in Mountain Lion were not properly split into separate logs.
- Retina support.