When I try to install the update for The Sims 3 InstallShield Wizard will try to load but FREEZES about two BARS from completion then this error pops up:

" Error Number 0x80040708
Unable to create required engine components, check whether you have appropriate privileges to create COM components.
(0x80004005) Unspecified Error "

It only happens with this program and other programs tend to install fine but I've never had a problem with an update installing until now. Usually I wouldn't care either as it's only minor bug fixes that I haven't EXPERIENCED but sense a mod that I want to install only works with the latest patch so it's been very frustrating to deal with.
I install everything already as an ADMIN so I don't think not being logged in as one is the problem. And I've already checked with the help boards for the Sims, this isn't a problem with the update itself.

Any help at all would be appreciated. THANK you.  I've been working on the problem for awhile now and still haven't solved it. I've looked fixes from the far corners of the internet and tried to do several fixes but nothing works.

But it seems to be a problem with InstallShield Wizard only. Everything that doesn't open the program will install and run fine. It tried reinstalling it but that doesn't work. Any ideas on how I can find what the problem with this thing is or a fix? Both preferably. xD