hi all, after switching to r2 i couldnt export cavity map with my old method in r1. what i did is masking>mask by cavity then texture>new from masking. it will give me black and white images thats show my cavity maps. now i got all black or all white image(depend color in my swatches) with this method 
any idea? why r2 is working diference? now i had to manually create my maps. using fill objects with white color>mask civity>fill with black again thanks~
Create texture from mask is broken.
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There are work aroumds using polypaint.