Hey jcrow,
these are given out by default. Like an empty template, so the Check_MK Server knows, that there is a mssql-plugin running and what exactly is running.
The information from the plugin itself should be seen in separate columns.
If you can’t find any error information in the logs on your server, the only think you can do, as far as i can think, is testing the plugin the moment, it fails for the Check_MK Server.
There is propably an error which will not be displayed, because it is stored in some variables.
cheers