I fond that the install/install.sh did not run automatic. And useradd and groupadd are not full in Slackware. So, I modify the install.sh and run it. The user urd and group urd are created successful.
elif [ -x /bin/addgroup ] ; then
addgroup="/bin/addgroup"
ag_options=""
elif [ -x /usr/bin/useradd ] ; then
adduser="/usr/bin/useradd"
au_options="-s /bin/false -d /tmp -g $urd_group"
And I reference to "How to solve most problems when starting with URD", did it, but no ineffective.