Time Machine

For the past year TimeMachine has mostly worked on my EX4.  For the last month I’ve repeatedly been getting messages that: “Time Machine completed a verification of your backups on…” and “To improve reliability, Time Machine must create a new backup for you.”

What’s going on and how do I fix it?

Hello, this seems to be an issue with Time Machine, see if the following links helps you in solving this problem.

https://discussions.apple.com/thread/4207296?start=0&tstart=0

https://discussions.apple.com/thread/3684176