RIS to WIM (WDS) image conversion failure

Hello:

Recently we installed SP2 on our Win 2003 Server. We primarily use
the server for doing RIS images, so now that SP2 installed WDS we are
trying to get our images converted to Native format (WIM files).
However, we can only get one RIS image converted. When we try to
convert the second image, we get the error "An error occurred trying
to Convert RIPrep Image. 0x80360051" at the very end of the conversion
progress bar. The log file shows:

[1716] 10:51:14: PerformingImageOperation called.
[1716] 10:51:14: 99
[1716] 10:51:14: Total Progress is 0x41
[1716] 10:51:14: EndImageOperation called.
[1716] 10:51:14: DISPID_WDS_IMAGEOPERATION_EVENTS_UPDATING_DRIVERS
[1716] 10:51:14: StartImageOperation called.
[1716] 10:53:20: An error occurred trying to Convert RIPrep Image.
0x80360051
[1716] 10:53:20: -> CEventBase::Register
[1716] 10:53:20: Unadvice was successful (cookie is 1)
[1716] 10:53:20: <- CEventBase::Register=0
[1716] 10:53:20: <- CDataImageMgr::ConvertRIPrepImage=80360051
[3684] 10:53:20: Create image is complete.
[3684] 10:53:20: Operation did not complete successfully. (0x80360051)
[3684] 10:53:20: -> GetErrorString
[3684] 10:53:20: Failed to Get the Error Message from CErrorMessage
13d
[3684] 10:53:20: <- GetErrorString=0
[3684] 10:53:20: -> SetDialogFont
[3684] 10:53:20: <- SetDialogFont=0

We get the same result if we try to convert the image in the MMC or
with the "wdsutil" command. We've tried about 5 different RIS images
and the same error comes up at the very end.

I've seen posts all over on this issue, but so far no solution has
been posted. Has anybody been able to successfully convert multiple
RIS images to WDS (WIM files), without having to do each one on a
physical box?

Thanks in advance!
--
Chris