Attempt to scan dmg for restore fails with “bad descriptor”

[OsX4me]

I have a clean install of 10.6 on an external FW drive (I installed to it and then cancelled setup and cleanly shut down), and I’ve imaged it from 10.6.1 using Disk Utility (New image from folder) saving as a compressed dmg, to another FW disk.
That part goes fine.

Then I attempt to scan the resulting image for restore and it fails with: Unable to scan “SnowLeopard.dmg” (Bad file descriptor)

I checked the the drive with Disk Utility, comes up fine. Ignore permissions is *not* set.

Anyone been able to do this successfully ?

Thanks,

— David

[OsX4me]

Did also check the source drive with (compatible, updated) Disk Warrior which found minor issues that it fixed. Still, trying to scan the resulting image for restore, fails.

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