THAT'S IT system problem!
sorted, no deleting and i lerned lot of good get arounds.
i.ve remove A:M from the system, restarted then reinstalled of the origanal disk version 10.5.
all works fine. i am going to finish this project, them i'll reinstall the upgrades i had, too see if it goes wrong somewhere along the line.
(ever the optomist)
thanks for the help
angus