Does it fail to install, or does it install and not work properly?
I had some repository errors but the installer seemed to eventually find a working repo.
I use Mustafa's instructions to test if they were still correct
# move to /tmp
cd /tmp
# remove old rpm
rm -f mratwork*
# install rpm (read Warning)
rpm -ivh https://github.com/mustafaramadhan/rpms/raw/master/mratwork/release/neutral/noarch/mratwork-release-0.0.1-1.noarch.rpm
# move to /
cd /
# update
yum clean all
yum update mratwork-* -y
yum install kloxomr7 -y
sh /script/upcp