Microsoft Access 97

Ok, The message I’m getting is “Couldn’t use M:\Access\workdir\system.mdw, file is in exclusive use”. I guessed it’s a rights issue. So I checked the NTFS rights according to our proprietary documentation and all settings are correct. Then I compared the NTFS settings from other sites that have the exact same installation procedure, and guess what? Nothing different. I am stumped on this one. All Access gurus, I need your advice on this one