Has anyone experienced the following error when trying to install the Norton Antivirus for Microsoft Exchange 2000? The error goes as follows: "Cannot load NAVEINST.dll". The install fails after this. This unfortunately is an older version of Norton, ver2.0 for Exchange. The Norton site states to ensure that none of the key files are missing or corrupt and that the versions are up to date. I've checked this according to what they have listed on their site and all seems good. Any other suggestions on this would be appreciated.