I am attempting to install Norton Antivirus Corporate 7.5 on a NT 4 SP6/Exchange 5.5 SP4 Server. I have reached step 7 of the Administrator Install(Install Norton Antivirus To Servers). I selected the server and ran through the steps. It hangs on the actual install of the files. Says it is "Copying Files" and "100%", "no errors". Yet it goes no further. I have checked all the usualy suspects(Knowledge Base, NAV Tech Support, and Google). I have unistalled and reinstalled several times to try to overcome this. Any help would be appreciated.