Actually I've just double checked it in the Sybex Zbrush Creature creation book and it says that the display menu I pointed out controls both the type of view in Zmapper, as well as the type of normal map generated, so you do need to press that anyway.
So although that doesn't answer your problem, it's something to remember, and it recommends 2048 maps.
Well i try .targa and .psd this are the formats all the tuts used.. i'm now reading something about Normal Maps if i get and idea what is happening i will post it ... 10x for the help dango if you have something in your mind ideas etc... tell me i could try them
It might be better to try flipping the uv's yourself from the menu, using flip V, that may help, the image in your screen shots looks a bit like it's not been flipped. And you know how programs can be sometimes... At least you'll be able to see it happen that way and if it still doesn't work you've eliminated one more theory! lol!
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