Larry, you appear to be living proof of the saying: "If you mess with the Book, God will mess with your mind."
You post: From the NASB;
Col 2:18 Let no one keep defrauding you of your prize by delighting in self-abasement and the worship of angels,taking his stand on visions he has seen, inflated without cause by his fleshly mind.
Westcott and Hort translated this from there own version of the Greek new testament correctly but it is not majority text as you can see.
This from the Majority text;
Col 2:18 Let no one rule against you, desiring to do so in false humility and in worship of the angels, intruding into those things which he has not seen, in vain being puffed up by his carnal mind,
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What's the difference?? They seem to be saying the same thing?? The only thing is "defraud" vs. "rule against." But that is no difference. To defraud is to rule against them. Defraud has a littel clearer connotation here. 
There is no difference in the Greek text here. All editions appear to say the exact same thing (unless the Hodges Farstad MajT says something different). Scrivener's 1894, RB MajT, UBS 3/4, and NA27 all say the exact same thing.
Where did you get your translation of hte Majority text from?? 
Now, Larry, I know this might be a little hard for you to grasp, you believing in the authority of God's word and all, but there is just a tad bit of difference between "things he has seen" and "things he has NOT  seen."
Things which he hath NOT seen" is the reading of the Majority of all texts, the Old Latin, Syriac Peshitta, Harkelian, Sinaiticus correction, D correction, C, and about 12 other uncials.  It is also the reading of the Spanish Reina Valera and even the Douay version.
However your Vaticanus, and  Alexandrinus omit the NOT, and so your nasb says "visions he HAS SEEN".  
Now you see it and now you don't.  But I guess this is the way you see the Bible version issue.
As for you and Hank saying there are no doctrinal differences, and the same things are taught in the mvs as in the KJB, I will probably start a new topic one of these days on this.
I'm sure you await it with breathless anticipation.
Larry's "bibles"
"seen" = "not seen"   No difference at all, no siree.
I doubt most people would be interested, but if anyone would like to see the mess that is "the oldest and best" manuscripts and how the Book of Colossians is all messed up in the conflicting modern versions, I did a study on this book showing how totally inconsistent modern "science of textual criticism" really is.  
If you want to take a glance at the first chapter and find it of interest, than you can continue through the book.  
http://www.geocities.com/brandplucked/Col.html