Office 2003 SP2 update won't install

[crewzr]

Short Description of the Problem:
I am able to download Office 2003 SP2 successfully, but installation aborts
midway with the error message: Installation Unsuccessful

Problem Details:
I'm trying to update an OEM MS Office 2003 Standard Edition
SKU# {91120409-6000-11D3-8CFE-0150048383C9}
(This is actually an OEM 60-day trial expiring on 2/28/06, but I'm going to
upgrade to the Student/Teacher edition when it arrives)

I'm using Office Update at http://office.microsoft.com/ to update to Office
2003 Service Pack 2 (English version). During installation, status line
displays wizardFrame.aspx installing... then installation aborts with the
error message: Installation Unsuccessful

Error signature
Installation Unsuccessful
ProdCode : {91120409-6000-11D3-8CFE-0150048383C9} ProdVer : 11.0.6361.0
Action : OfficeUpdate.ApplyPatch ErrNum : 1603
Err0 : {8997F2E8-9CA1-44FF-9DAD-D3E5EB4B41F7} Err1 : 1311
Err2 : 3.1.4000.2435

Curiously, one of the files sent with the error report contains many
references to the following two (incompatible) products. The way I understand
the Office 2003 numbering scheme at:
http://support.microsoft.com/kb/832672/
* {901C0409 refers to an Enterprise edition with an Access runtime module
(which I certainly don't have)
* {91120409 refers to a Retail/OEM product (although I have an OEM trial)
Expected product:
{901C0409-6000-11D3-8CFE-0150048383C9}
Found product:
{91120409-6000-11D3-8CFE-0150048383C9}

Apologies for the length of this post. Thanks in advance for any help!

 

[Lawrence Garvin \(MVP\)]

You may not be able to apply the service pack(s) to trial editions.

It varies from product to product.

I would suggest upgrading to the S/T edition first, and then applying the
service pack.