- Is your box i686 or x86_64? check with this command:
uname -m
and download the respective package to your computer type and delete the previous installed package if is necesary:
execute this command before to enable access:
xhost si:localuser:root
then execute:
sudo xeroxprtmgr
execute this command after to disable access:
xhost -si:localuser:root
NOTE
The xhost program is used to add and delete host names or user names to the list allowed to make connections to the X server.
man xhost
Regards.,