Problem installing V8 FP4 on W2K

Hi all,

When I try to install FP4 on my W2K Laptop the Win Installer complains
that it cannot open the package. The same package works on other
machines - so it must be a problem of my box. Disk space should be not
a problem - 800 MB on c: (system) and 2 GB on D: (data and programs)
are free. I know this is not a DB2 problem - but any ideas anyone ?

TIA
Joachim