finally after a lot of research and no help from parallels on this topic, I finally corrected the issue by simply following the steps in this topic http://forum.parallels.com/showthread.php?p=629338
The important step was "step 3" in which the existing data was removed from...
I receive the error below after installing the Health Monitor for the first time.
Running Plesk 10.4.4 Update #20, on Linux 2.6.18-028stab095.1
i've tried to restart psa, and also tried to perform "detect hardware changes" and "revert to default configuration"