intstall Excel as viewer of BEx

I think the solution is in OSS Note "BEx Analyzer: Excel Add-ins interfere at the start":

"The simplest solution is to deactivate the specified Add-Ins in the Add-In manager of Excel (Excel main menu -> Tools -> Add-Ins).

If this does not seem possible, as an alternative, you can change the following key in the registry on the PC:

HKEY_CLASSES_ROOT\CLSID\{00020820-0000-C000-46}\LocalServer32

This key normally contains the command line for starting Excel via OLE, for example:

C:\Program Files\Microsoft Office\Office\excel.exe

If you add "/s" to this command line:

C:\Program Files\Microsoft Office\Office\excel.exe /s

the Add-Ins listed in the Add-In-Manager are only loaded when you start Excel manually and are no longer loaded when starting Excel via OLE.

With this change in the registry, the problematic add-ins remain installed in the Add-in-Manager.However, they are no longer loaded when Excel is started via OLE, which is the case when you start the Business Explorer Analyzer, for example."

hope it helps!

Bye,

Roberto