Failed to Clone

[sdsl]

Hello, I am using the latest version of SuperDuper on a MacBook Pro M3 running 14.6.1 (the latest).

I erased a new disk at APFS GUID, then ran SuperDuper with the option to first erase, then copy all files. It stopped with this:

| 05:13:44 PM | Info | Creating APFS Volume
| 05:13:44 PM | Info | Created new APFS Volume disk7s1
| 05:13:44 PM | Info | Setting mount state
| 05:13:44 PM | Info | Setting volume permissions
| 05:13:45 PM | Info | Finished erase
| 05:13:45 PM | Info | PHASE: 2. Copy Files
| 05:13:46 PM | Info | ...ACTION: Copying files from Macintosh HD to MBP Clone 8-2024
| 05:13:46 PM | Info | ......COMMAND => Replicating Macintosh HD to MBP Clone 8-2024
| 05:13:46 PM | Info | Initializing
| 05:13:46 PM | Info | done
| 05:13:47 PM | Info | done
| 05:13:58 PM | Info | Replicating System Volume
| 05:14:36 PM | Info | Completed System Volume replication. Copied 583.21 GB
| 05:15:20 PM | Info | Replicating Data Volume
| 05:15:47 PM | Info | Volume replication failed - Resource busy
| 05:15:50 PM | Error | ***ERROR OCCURRED: ****FAILED****: result=256 errno=60 (Inappropriate ioctl for device)

When it stopped the target drive had been renamed to "Macintosh HD", before it had been called "Clone."

Any suggestions for getting past this? Thanks!