Yup. That fixed it, Govert. Thanks!
<!-- <ExternalLibrary Path="ExcelDna.IntelliSense.dll" ExplicitRegistration="true" LoadFromBytes="true" Pack="true" IncludePdb="true" /> CAUSING MINOR ERROR -->
<!-- <ExternalLibrary Path="ExcelDna.Registration.dll" ExplicitRegistration="true" LoadFromBytes="true" Pack="true" IncludePdb="true" /> CAUSING MINOR ERROR -->
<Reference Path="ExcelDna.IntelliSense.dll" ExplicitRegistration="true" LoadFromBytes="true" Pack="true" IncludePdb="true" />
<Reference Path="ExcelDna.Registration.dll" ExplicitRegistration="true" LoadFromBytes="true" Pack="true" IncludePdb="true" />
<ExternalLibrary Path="AKHudfC.dll" ExplicitExports="false" ExplicitRegistration="true" LoadFromBytes="true" Pack="true" IncludePdb="true" />