.msi package deployment problems, please help!

[Walid]

Hi,

I am trying to publish/assign an msi package created using
InstallShield Developer 7.2. My server is Win2000 Advanced Server. I
always get the following useless error message when trying to add my
package to the group policy: "Add operation failed. Unable to extract
deployment information from the package. Run validation on the package
to ensure that the pacakge is correct."

I've seen many guys post messages on the usenet with this error, but
there is no concrete answer or guide as to what is causing this
strange problem.

Any help will be appreciated.
Thanks,
Walid Ismail