Can’T install heroes of might and magic 6

I have this error code:
Error Code: -5001 : 0x80070002
Error Information:
>SetupNew\setup.cpp (1220)
PAPP:Might & Magic Heroes VI
PVENDOR:Ubisoft (http://www.ubi.com)
PGUID:745D37C2-26F4-4b65-BA13-F9840EBFA75B
$
@Windows Vista / Server 2008 Service Pack 0 (6000)
IE Version: 8.0.7600.16385
Anyone with info to why?
I googled the error can’t find it, for installation…
HELP! Thanks
Answer #1
Anyone? a simple fix? This is windows 7 ultimate.
Installshield problem…,
Answer #2
Is there a way to get rid of installshield?
…