Error in MySQL Cluster server RPM installation 7.2.8 (no replies)

Hello,

I have got following Error while installing the MySQL Cluster Server 7.2.8 (MySQL-Cluster-server-gpl-7.2.8-1.rhel5.x86_64.rpm) after removing old RPMs of MySQL Cluster 7.1.18

Preparing packages for installation...
ls: /var/lib/mysql/*.err: No such file or directory
ls: /var/lib/mysql/*.err: No such file or directory
MySQL-Cluster-server-gpl-7.2.8-1.rhel5
/var/tmp/rpm-tmp.13550: line 23: [: /var/lib/mysql: binary operator expected
/var/tmp/rpm-tmp.13550: line 24: [: /var/lib/mysql: binary operator expected
/var/tmp/rpm-tmp.13550: line 30: [: /var/lib/mysql: binary operator expected
/var/tmp/rpm-tmp.13550: line 35: /var/lib/mysql
/var/lib/mysql/RPM_UPGRADE_MARKER: No such file or directory
chmod: cannot access `/var/lib/mysql/mysql': No such file or directory
/var/tmp/rpm-tmp.13550: line 140: /var/lib/mysql
/var/lib/mysql/RPM_UPGRADE_MARKER: No such file or directory
/var/tmp/rpm-tmp.13550: line 141: /var/lib/mysql
/var/lib/mysql/RPM_UPGRADE_MARKER: No such file or directory
/var/tmp/rpm-tmp.13550: line 142: /var/lib/mysql
/var/lib/mysql/RPM_UPGRADE_MARKER: No such file or directory
/var/tmp/rpm-tmp.13550: line 144: /var/lib/mysql
/var/lib/mysql/RPM_UPGRADE_HISTORY: No such file or directory
mv: target `/var/lib/mysql/RPM_UPGRADE_MARKER-LAST' is not a directory
error: %post(MySQL-Cluster-server-gpl-7.2.8-1.rhel5.x86_64) scriptlet failed, exit status 1

Though my Functional Setup (1MGM, 1DBD , 1 MYSQLD) came up successfully, but want to know the reason and possible consequences of the same.

Thanks in Advance.