CP Hangs at the Preparing phase

[chrisduke]

I'm trying to back up to existing SD sparse bundle on a DroboFS network drive. SD hangs:

| 01:17:08 PM | Info | SuperDuper!, 2.6.4 (89), path: /Applications/SuperDuper!.app, Mac OS 10.7.1 build 11B2118 (i386)
| 01:17:08 PM | Info | Started on Sat, Sep 10, 2011 at 1:17 PM
| 01:17:08 PM | Info | Source Volume: Macintosh HD, mount: /, device: /dev/disk0s2, media: APPLE SSD SM256C, interconnect: Internal SATA, file system: "Journaled HFS+", OS: 10.7.1 (11B2118), capacity: 250.14 GB, used: 62.57 GB, directories: 191680, files: 756867, ejectable: NO, ACLs: Enabled
| 01:17:08 PM | Info | Target Image: /Volumes/Portable/ChrisAir13 BU.sparsebundle, name: ChrisAir13 BU
| 01:17:08 PM | Info | Copy Mode : Smart Update
| 01:17:08 PM | Info | Copy Script : Backup - all files.dset
| 01:17:08 PM | Info | Transcript : BuildTranscript.plist
| 01:17:09 PM | Info | PHASE: 1. Prepare to Copy Files
| 01:17:09 PM | Info | ...ACTION: Preparing Macintosh HD
| 01:17:09 PM | Info | ......COMMAND => Verifying the integrity of volinfo.database
| 01:17:09 PM | Info | volinfo.database OK
| 01:17:09 PM | Info | ......COMMAND => Enabling permissions on Macintosh HD

Any suggestions?