You cannot change to a directory on another host.
Under NIS+, automounter names must be renamed to meet NIS+ requirements. NIS+ cannot access /etc/auto* tables that contain a period in the name. For example, NIS+ cannot access a file named auto.direct.
Use nisls and niscat to determine if the automounter tables are properly constructed.
Change the periods to underscores. For example, change auto.direct to auto_direct. (Be sure to change other maps that might reference these.)