I had the same problem with 6.0 Beta 3
Did the following:
1) Re-downloaded the noarch.rpm and the src.rpm
2) rpm -e saco-mitel-lprng-monitor-0.0.2-1
3) rpm -Uhv saco-mitel-lprng-monitor-0.0.2-1.src.rpm
4) rpm -Uhv saco-mitel-lprng-monitor-0.0.2-1.noarch.rpm
Now it works!