A provider referenced in the schema has an incorrect or incomplete registration. This error may be caused by any of the following ...

A provider referenced in the schema has an incorrect or incomplete registration. This error may be caused by any of the following
 
A missing pragma namespace command in the MOF file used to register the provider, resulting in the provider being registered in the wrong WMI namespace. 

A corrupt repository, which may be fixed by deleting it and recompiling the MOF file.