Why author's name written in complete full name in my citations?

I use EndNote X5, and recently I found problems with some of my references written in full name in citation section. I just can’t figure it out how to change back to the normal (I use APA6th style) no matter what I try. Strange thing is when I open new blank document in word, it works like usual. What should I do, I cannot rewrite it in new document since it my thesis and already 200 pages, please help anyone. Thanx in advance.

Thank you for the reply, but when I clicked the link it says “Invalid Parameters Specified”. 

I uploaded the appearance when the reference cited in my file and in the new words document in attachment, hope you can help. I use Ms Word 2007 and EndNote X5.

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Thank you Leanne, it happens to some authors, not all. I will try your solution, hope it’ll work. Seems like I have to check back the data entry. Again thanx.

Hi there

I need help with the same problem 

I tried to untick the options but it just refused to let me save my changes

I kept getting an error message

The document “APA 6th.ens” could not be saved as “APA 6th Copy”. The file doesn’t exist.

Quite desperate for help