How do I correct this problem: "Time Machine couldn't complete the backup to "Robert's Airport Time Capsule." The backup disk image "/Volumes/Data/Robert's iMac.sparsebundle" is already in use.
How do I correct the following problem?
"Time Machine couldn't complete the backup to "Robert's Airport Time Capsule".
The backup disk image "/Volumes/Data/Robert's iMac.sparsebundle" is already in use.
iMac, OS X Mavericks (10.9.1)