I'm in the publication DB and using sp_publication_validation; only one publication gives me "Command(s) completed successfully". Why?

Hello,

I am able to validate 3 of my 4 new publications but when I execute the sp_publication_Validation stored procedure for the 4th one, I don't see any rowcounts, just: "Command(s) completed successfully".  Does anyone know what can cause this? The replication on this publication is "working".

Thanks.