Thread Resurrection I'm sorry - however I had problems with a couple of extended attributes - this was the one line recursive fix I applied to all files on the Cache drive:
find -type d -exec setfattr -x user.org.netatalk.has-Extended-Attributes {} \;
and
find -type d -exec setfattr -x user.org.netatalk.Metadata {} \;
Once I'd removed these attributes (& turned off AFP in the shares) this meant mover could execute again