Is this an upgrade or a clean install?
It looks like you don't have the right version of mojoPortal.Business.dll
because the error message shows the method signature:
mojoPortal.Data.dbPortal.SiteSettings_Create(System.Guid, System.String, System.String, System.String, System.String, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, System.String, System.String, System.String, System.String, Boolean, Boolean, Boolean, System.String, Int32, System.String, System.String, System.String, Boolean, Boolean, Boolean, System.String, System.String, Boolean)
but the correct signature is like this:
mojoPortal.Data.dbPortal.SiteSettings_Create(System.Guid, System.String, System.String, System.String, System.String, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, System.String, System.String, System.String, System.String, Boolean, Boolean, Boolean, System.String, Int32, System.String, System.String, System.String, Boolean, Boolean, Boolean, System.String, System.String, Boolean, System.String)
Note one more string at the end of the method signature.
Joe