Degraded Array - How to fix?

I'm doing some general mainatnace on my main FCP machine, and I was going to run the 'Background Array Conditioning' on my second array (in a RAID 50) on my Xserve RAID, but I got this error: "Cannot condition array because it is offline or degraded."
About 3 months ago, I had a drive go down in this set and I got a replacement, popped it in, and it started rebuilding itself. I've used the RAID every day since then without and real problem, but I'm wondering if maybe this drive didn't get rebuilt correctly?
Will I be able to fix this error message by running the 'Rebuild Parity Data" utility?
Any suggestions you have are greatly appreciated. I just updated to the latest firmware yesterday and turned off Allow Host Cache Flushing and the RAID seems snappier than before, and if I can just get this error message cleared out I'll be all set.
Thanks for your help-

Follow up:
I think this is a RAID Admin bug: When I select the RAID set 2 with the Radio button and click Confirm in step 3 I get a warning that the set is offliine or degraded. When I select it by clicking on the image of the RAID set, I get a message saying I may condition the set.
In fact, I conditioned the RAID last night successfully and both sets are Running according to Disk Utility.

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Quote
The description for Event ID ( 7 ) in Source ( nvraid ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: .
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Code: [Select]
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bump
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