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Showing texture in zbrush3.12 OSX

Hello. I’m having trouble getting my texture onto the model.
Heres the info.

I imported the texture as normal.

Model built in maya 2010, low geometry, uv mapped.

Texture is a one layer .psd, 1024x1024

I have tried flipping the texture and turning colourise on and off and using texture > colour.

Can anyone please help me?