backup failed: invalid argument

[kaolson]

Forgive me if I missed this searching the forum, but though I saw threads wrt i/o errors, this seems to be different.

It's been about 12 days since my last (of many) successful SmartUpdates and I decided to do an EraseCopy. This is an MBP, 10.6.4, and I've done several SmartUpdates and probably one or two EraseCopy's since the problem file was last updated.

IINM, it's a file in a VMWare Fusion package, and I'm pretty sure I have not run Fusion since way before my last few backups. Tried backup drive to both USB/FW (two different drives actually). I've retried the SD backup many times, after resetting the SMC, NVRAM, checked the source drive in Disk Utility, even booted as a target disk and tried it from another system.

A SmartUpdate targeting a drive that contains the last successful SmartUpdate does work, probably because that VMWare image hadnt been touched.

I have today run Fusion on that VM, then shut it down (from a Suspended guest to a Shut Down, so should have been sufficient to modify the file), but subsequent SD backup returned the same error.

Urusai! Happens about 3.5 hrs into the backup..

I'm not a software engineer but have done a bit of QA & I'm wondering 1) what could have changed wrt to this file that hasnt been touched in months, and 2) what's SD doing that returns an invalid argument in such a routine situation?

Here's the bottom of my SD log. Any insights greatly appreciated!

| 06:07:50 PM | Info | Error copying /Users/kao/Virtual Machines/VMWare/vfw2k3-a.vmwarevm/vfw2k3-a.vmdk to /Volumes/iom112HD_Misc/Users/kao/Virtual Machines/VMWare/vfw2k3-a.vmwarevm/vfw2k3-a.vmdk of type 8 due to error 1
| 06:07:50 PM | Error | SDCopy: Error copying /Users/kao/Virtual Machines/VMWare/vfw2k3-a.vmwarevm/vfw2k3-a.vmdk to /Volumes/iom112HD_Misc/Users/kao/Virtual Machines/VMWare/vfw2k3-a.vmwarevm/vfw2k3-a.vmdk of type 8 due to error 1\n: Invalid argument