Recently we've run into an odd issue trying to get the analysis toolpack
running on one machine - on every machine but this one machine, it functions
normally. That is to say that going through...

Office Button - Excel Options
Add-Ins - Select "Excel Add-Ins" - Hit the Go... button to manage add-ins
Check the Analysis ToolPack, hit Ok, let it install
The Analysis group appears on the Data tab of the ribbon.

.... works on other machines.

On the one problem machine, everything works just fine, except the Analysis
group does *not* appear on the data tab of the ribbon, and the functions do
not appear to be available to Excel when trying to customize the quick access
toolbar and selecting "All Commands".

Managing Excel Add-Ins via Excel options after restarting Excel indicates
that the Analysis ToolPack is loaded, even though it appears to do nothing.

Thus far we have tried:
- Restarting Excel
- Restarting Windows (XP with SP3 and all patches as of today)
- Deleting the Analysis ToolPack from C:\Program Files\Microsoft
Office\Office12\Library and letting Excel reinstall the ToolPack on next
launch
- Doing an Office repair through Add/Remove programs
- Removing Office, restarting, reinstalling office with "Run all from my
computer" selected for every option
- Changing features via Add/Remove programs, removing the Toolpack, going to
the installer source (via the network) launching setup, and adding it back
from there (This was per what solved a similar issue for someone else on an
Experts-Exchange post found via Google).
And all with no luck. With any of the attempts that involved
uninstalling/reinstalling parts of office, Microsoft Update was run to verify
that all Office Updates had been installed. The real frustrating part of all
of this is that it never hits errors at any step of the way, just that the
Analysis group is completely absent after all is said and done.

Anyone have any thoughts on this (beyond trying to reinstall Windows) to get
it working on the one machine, or seen it before?