SAN HQ Cannot Start - Root element is missing

I was running v2.6.2000.6947 of SAN HQ. When trying to start it I would receive the error below. I upgraded to v3.0.1. but am receiving the same error. Any ideas? TIA

Root element is missing.
System.Xml
at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
at System.Xml.XmlReader.MoveToContent()
at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderServiceDescriptorCollection.Read4_ArrayOfServiceDescriptor()