HELP - trouble with format of in text citations

With EndNote 6 for Mac there is a problem my references that have multiple authors are not displayed in the body of the paper in APA format.  The correct format is shown in all of the dialogue boxes and the citation is correct in the references.  What am I doing wrong???

It sounds like a possible problem with the Author Name or Author List setting in the APA output style but could you  clarify by providing examples of how the multiple authors (wrong) citation appears in your document and what the correct citation format should be? 

you probably don’t have the correct APA output style selected in the manuscript itself.