why isn't my downloaded lens profile showing up in lightroom 4.1?

[rampanthamster]

hi all, i've downloaded a lens profile for my samyang 14mm 2.8. On my mac i've put it in /mynames/library/application support/adobe/cameraraw/lensprofiles/1.0/canon (i had to create the canon folder as nothing else was there). I put the file 'samyang14.lcp' in that folder, quit lightroom, reopened, went to develop but the new profile doesn't show up anywhere..

what am i doing wrong?