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From: Bill on 4 May 2006 18:25
I was getting the following error when trying to upgrade from 2006 sp4
to 2006 sp4.1 so I uninstalled sw2006 and now I get the same error
trying to reinstall sw2006. Any suggestions?

Error 1402, Could not open key: UNKNOWN\swBackOfficeCore.Class1\CLSID,
Verfy that you have sufficient access to that key, or contact your
support personnel.

I do still have a working copy of sw2005 sp5 on this machine. Would
that cuase any problems?

Anti-virus if off.
I have administrator rights.
OS is Windows XP SP2.

Thanks.

From: Mr. Who on 6 May 2006 00:17
Well when I see key I think registry key. Maybe for some reason it
can't modify that registry value? Other than that my thought is you
have a bad download of 06. Try redownloading and making sure the
checksum passes.

From: Bill on 7 May 2006 16:30
Got it working. Here is what I had to do.

1. Go in the registry editor. The top most folder listed in
HKEY_Classes_Root. Right-click on this folder and select PERMISSIONS
from the menu.

2. Once there, look through the permissions listed and make sure that
Administrators and System are both listed. If they are not, please
refer to the bottom of this write-up under "Conditional Step".

3. If they are both listed, make sure that both have Full Control
checked on ALLOW. If they are not yet checked, click in that box an
select APPLY. This will put the proper permissions through the registry
an should set you up for a good installation. Once finished with this
area select OK
and close the Registry Editor.

4. Once done, retry the installation of Diskeeper.

Conditional Step
---------------------
If you've found that System and/or Administrators are not listed in the
permissions section, you will need to add them. To do so, click the Add
Button and in the following screen type System or Administrator
depending on which is missing. (You may only do one at a time). Once
typed select the CHECK NAME button which will end up highlighting the
name and then you can select OK.

From: Nascar on 8 May 2006 08:08
Same thing happened to me when I tried to update from 2006 SP3 to 4.1.
The fix was just as was described. Something happened to change those
permissions somehow. Something in the install?

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