We are backing up our iPhone 6 plus and wanted to assure that also the apps were backed up so beside "sync" we also did a File >> Device >> Transfer purchases from iPhone-Name'.
However, we keep getting this error:
Attempting to copy to the disk "XXXXX" faild. An unknown error occurred (54)
We google it and recommended to restart PC.
We did and same error
After click OK, the sync icon keeps turning as if syncing (if we click on it's X, it says canceling sync).
Should we worry about this error?
Can we complete the backup or sync or the error prevent from a correct backup?
What should we do?