By activating Libreoffice portable I get an error "this is not a win32 application" ?

I have installed libreoffice portable on an USB stick. On one windows XP macine it works fine but on an other machine I get the error that “This is not a win32 application” is it possible to go arround this error?
Or what is the reason of this error? Both machines have windows XP installed!
Is there an other program out there that makes it possible to run Excell data in an "lite"enviroment?

I’m bound to Lite or portable software because I can due to surtain reasons not install software on the machines on which I need to be able to read excell or open office calc files…

Looking forward for a working sollutions.

Kind regards
Mike

Did you get your LibreOfficePortable from the PortableApps site or from LibreOffice.org? (I prefer the PortableApps packages.)