IfOperStatus Error in PHP Log

[sfsrjstw]

My PHP errors log has been filling up with errors related to the MAC Track plugin. The PHP errors are the same through out the entire log and are:

PHP Notice: Undefined index: ifOperStatus in C:\inetpub\wwwroot\cacti\plugins\mactrack\lib\mactrack_norbay.php on line 175
PHP Notice: Undefined index: ifDescr in C:\inetpub\wwwroot\cacti\plugins\mactrack\lib\mactrack_norbay.php on line 219
PHP Notice: Undefined index: ifDescr in C:\inetpub\wwwroot\cacti\plugins\mactrack\lib\mactrack_norbay.php on line 186

Has anyone else run into this? I am running Cacti Version 0.8.8a, plugin version 2.9 with PIA 3.1.

Thanks!