did you try do stop all FM processes via CLI (command line interface)?
fmsadmin stop adminserver
fmsadmin stop fmse
fmsadmin stop ape (if cwp is enabled)
fmsadmin stop fmsib
fmsadmin stop xdbc (if odic is enabled)
fmsadmin stop server
... and then launch the update package.
Thanks again Fabio. I worked it out. I went into the Activity monitor and force quit the fms processes. Probably not ideal but it worked. Thanks again.
Yeah, this is the dirty workaround